3 e electronics 161110 revised
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This document provides an overview of electricity topics including household appliances, safety, alternating and direct current, circuit diagrams, current and voltage, batteries and transformers, resistance, variable resistors and their uses, electrical power, lamps and heaters, series and parallel circuits, fault finding, the mains supply, and domestic electricity meters. It also discusses electric motors and how electricity is used to power movement. Models of current flow are presented using analogies to a bakery delivering bread by van and electric charges delivering energy from a battery to a light bulb.
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3 e electronics 171110
The document discusses electricity and circuit diagrams. It uses an analogy of bread delivery vans to explain the model of current flow in a circuit. Charges carry energy from the battery to the bulb, like vans deliver bread from the bakery to the supermarket. It also discusses that circuit diagrams use symbols to represent components and current (I) is measured in amps using a ammeter.
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The document discusses electricity and current flow through circuits. It provides an analogy comparing the flow of bread vans delivering bread to a supermarket to the flow of electric charges delivering energy through a circuit. It then discusses circuit diagrams and how to measure current using an ammeter, which must be connected in series to break into the circuit.
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The document discusses electricity and current flow through circuits. It explains that current is the flow of charged particles called electrons through a complete circuit, and uses an analogy comparing current to the flow of bread vans delivering bread to a supermarket. It also discusses circuit diagrams and how to measure current using an ammeter, which must be connected in series with other circuit components.
3 e electronics 171110
1) The document discusses electricity and circuit diagrams. It uses the analogy of bread delivery vans to explain how electric current works, with the battery providing energy to charges that move through a circuit like vans delivering bread.
2) It introduces circuit diagrams and symbols used to represent different circuit components.
3) Measurement of electric current is discussed, noting that current is measured in amperes using a device called an ammeter.
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3 e electronics 171110
The document discusses electricity and circuit diagrams. It uses an analogy of bread delivery vans to explain the model of current flow in a circuit. Charges carry energy from the battery to the bulb, like vans deliver bread from the bakery to the supermarket. It also discusses that circuit diagrams use symbols to represent components and current (I) is measured in amps using a ammeter.
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The document discusses electricity and current flow through circuits. It provides an analogy comparing the flow of bread vans delivering bread to a supermarket to the flow of electric charges delivering energy through a circuit. It then discusses circuit diagrams and how to measure current using an ammeter, which must be connected in series to break into the circuit.
6 d electronics 181110
The document discusses electricity and current flow through circuits. It explains that current is the flow of charged particles called electrons through a complete circuit, and uses an analogy comparing current to the flow of bread vans delivering bread to a supermarket. It also discusses circuit diagrams and how to measure current using an ammeter, which must be connected in series with other circuit components.
3 e electronics 171110
1) The document discusses electricity and circuit diagrams. It uses the analogy of bread delivery vans to explain how electric current works, with the battery providing energy to charges that move through a circuit like vans delivering bread.
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This document discusses electric current and its effects. It explains that:
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1. Electricity is a type of energy caused by the flow of electrons from negative to positive points. Charge is measured in coulombs and current is the rate of flow of electric charge measured in amperes.
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Unidad didáctica del tema "Electricity" de la asignatura Tecnologías de 3º de la ESO. La unidad está desarrollada siguiendo las directrices de la metodología AICLE.
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This document provides information about parallel circuits. It defines parallel circuits as those where components are connected such that current can divide and flow through multiple components simultaneously. Some key points made include:
- In parallel circuits, the current through individual branches can vary but the total current increases as total resistance decreases.
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This document discusses parallel circuits and measuring current and voltage in a parallel circuit. It summarizes that in a parallel circuit, current has multiple paths to flow and the total current from the supply equals the sum of the currents in each parallel branch. It also states that the voltage across components in parallel is the same and equals the supply voltage.
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This document discusses measuring current in an electricity circuit. It reviews concepts like why we use electrical energy and the flow of electrons in a circuit. The aim is for students to measure the current in a circuit with different numbers of light bulbs and at different points in the circuit. They will record their apparatus, circuit diagram, method, and results. The conclusions are that adding more light bulbs to a series circuit reduces the current, and the current is the same at all points in a series circuit.
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This document is an assignment on solar energy submitted for a course on Environment and Textile. It begins with an introduction explaining that the sun is a star that produces energy at its core through thermonuclear fusion. It then notes that enough solar energy reaches Earth in an hour to meet our annual energy needs. The document defines solar energy and discusses methods of collecting, storing, and using it. It covers advantages like being long-lasting and pollution-free as well as disadvantages like high initial costs. Applications of solar energy discussed include powering homes, water heating, farming, and photovoltaic cells. The conclusion states that solar energy is useful for reducing greenhouse gases but challenges remain in meeting energy demands solely through solar.
Energy harvesting and low power energy applications
This document describes an energy harvesting USB charger that collects ambient energy from solar panels, piezoelectric strips, and a Faraday induction tube to charge mobile devices. It works by harvesting energy through these methods, regulating and storing the collected energy in batteries, and outputting it through a USB port. The design includes stages for regulating voltage from constant sources like solar, collecting small amounts of irregular energy, and converting the stored energy to a USB output of 5 volts. It aims to allow users to stay mobile by charging devices using natural ambient energy harvested throughout the day without needing to stop to charge.
electric_current_and_circuits.pdf
This document discusses electrical circuits and concepts such as voltage, current, resistance, and different types of circuits. It explains that a closed conducting loop or circuit is needed for electric current to flow. Current is the continuous flow of electric charges through a conductor. Voltage provides the pressure that pushes charges through a circuit, while resistance opposes their flow. Ohm's Law defines the relationship between current, voltage, and resistance. The document also compares series and parallel circuits, noting differences in how current and voltage are distributed in each type.
Electricity
Electricity is important in powering many devices in homes and making them more convenient. It comes from power plants and is delivered to homes through outlets. Without electricity, many modern conveniences like lights, appliances, and electronics would not function. Electricity can power devices directly from outlets or through batteries and can be converted into different forms of energy like heat, light, sound, and motion to operate machines. Proper safety rules must be followed when using electricity.
Y2_Electricity
Electricity is important in our lives and powers many devices in our homes. If the electricity went out this morning, it would be difficult to function without devices like lights, appliances, and electronics. Electricity comes from power plants and is delivered to homes through wires, where it can power devices plugged into outlets on walls or run on batteries. Electricity can be converted into different forms of energy like heat, light, sound, and motion to power various machines and devices. Proper safety around electricity is important.
Electricity
Electricity is very important in our daily lives and it would be difficult to function without it as many things in our homes rely on electricity. The document discusses where electricity comes from including main electricity from outlets and batteries. It defines key terms like power plants, sockets, plugs, and wires. Current electricity can be converted into different types of energy like heat, light, sound, and movement. The document concludes with safety tips about keeping water and electricity separate.
Electricity
Electricity is very important in our daily lives and it would be difficult to function without it as many things in our homes rely on electricity. The document discusses where electricity comes from including main electricity from outlets and batteries. It defines important electricity terms like power plants, sockets, plugs, and wires. Current electricity can be converted into different types of energy like heat, light, sound, and movement. The document concludes with safety rules around water, overloading sockets, and switches.
Electricity and Electrical Circuits - powerpoint.pptx
This document provides an introduction to electricity and electrical circuits. It discusses how electrons can move between atoms and materials, allowing electricity to flow. There are three main concepts discussed: current (rate of electron flow), resistance (anything slowing electron flow), and potential difference (change in electrical energy between points). Circuits allow electricity to flow through a complete path. There are three main types of circuits: series circuits with one conducting path, parallel circuits with multiple paths, and complex circuits with aspects of both. The document outlines key characteristics of each circuit type.
Mppt of solar enrgy
this presentation shows and explains how to get the maximum power point using and applying tracking method of Solar energy
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6 d electronics 091210
This document discusses using a Wheatstone bridge circuit to measure resistance. It provides instructions on how to set up the circuit with 3 known resistors and 1 unknown resistor. When balanced, the voltmeter will read 0 and the resistance values can be used to calculate the unknown resistance. It notes that when slightly unbalanced, the voltmeter reading is directly proportional to the change in resistance, allowing it to be used as a measuring device near the balance point.
6 d electronics 061210
This document discusses using a Wheatstone bridge circuit to measure resistance. It provides instructions on how to set up the circuit with 3 known resistors and 1 unknown resistor. When balanced, the voltmeter will read 0 and the resistance values can be used to calculate the unknown resistance. It notes that when slightly imbalanced, the voltmeter reading is directly proportional to the change in resistance, allowing it to be used as a measuring device near the balance point.
1 p9 pregnancy 091210
The document outlines the stages of pregnancy from fertilization to birth. It describes how sperm fertilizes an egg in the fallopian tubes to form a zygote. The zygote then implants in the uterus and develops over weeks and months with the placenta, umbilical cord, amniotic sac, and amniotic fluid providing support. The final stage of labor will be covered in the next lesson.
1 p5 pregnancy 071210
The document outlines the stages of pregnancy from fertilization to birth. It explains that fertilization occurs when sperm meet an egg in the fallopian tubes. The fertilized egg is called a zygote and begins developing in the uterus over the next 9 months as the placenta, umbilical cord, amniotic sac, and amniotic fluid form to support the growth of the embryo and fetus until birth. The next lesson will cover labor and delivery.
1 p5 sex organs 031210
The document describes the male and female reproductive systems. The male system includes the testes, sperm duct, prostate, urethra and penis which work together to produce and release sperm. The female system includes the ovaries, oviducts, uterus, cervix and vagina which work to produce and release eggs, allow fertilization to occur and support fetal development. Fertilization happens when a single sperm meets and enters an egg in the oviduct, joining their nuclei to form a fertilized egg or zygote.
1 p5 puberty 301110
Puberty is the name given to sexual maturity, which normally happens between the ages of 10-16. During this time for girls, breasts develop, the hips widen, and menstrual periods begin. For boys, the voice deepens, facial hair grows, and the testes and penis enlarge. The opening to the uterus is called the cervix. If an egg is not fertilized, the thick spongy lining of the uterus breaks down and sheds, in a process called menstruation. On average, the menstrual cycle lasts 28 days.
1 p5 sex organs 031210
The document summarizes the key male and female reproductive organs and the fertilization process. The male organs (testes, sperm duct, prostate, urethra, penis) work together to produce and release sperm. The female organs (ovary, oviduct, uterus, cervix, vagina) function to produce and release a single egg for potential fertilization in the oviduct. Fertilization occurs when a single sperm meets and enters the egg in the oviduct, joining their nuclei to form a fertilized egg or zygote.
1 p9 sex organs 071210
The document describes the male and female reproductive systems. The male system includes the testes, sperm duct, prostate, urethra and penis which work together to produce and release sperm. The female system includes the ovaries, oviducts, uterus, cervix and vagina which work to produce and release eggs, allow fertilization to occur and support fetal development. Fertilization happens when a single sperm meets and enters an egg in the oviduct, joining their nuclei to form a fertilized egg or zygote.
6 d electronics 061210
This document discusses using a Wheatstone bridge circuit to measure resistance. It provides instructions on how to set up the circuit with 3 known resistors and 1 unknown resistor. When balanced, the voltmeter will read 0 and the resistance values can be used to calculate the unknown resistance. It notes that when slightly imbalanced, the voltmeter reading is directly proportional to the change in resistance, allowing it to be used as a measuring device near the balance point.
1 p9 pregnancy 091210
The document outlines the stages of pregnancy from fertilization to birth. It describes how sperm fertilizes an egg in the fallopian tubes to form a zygote. The zygote then implants in the uterus and develops over weeks and months with the placenta, umbilical cord, amniotic sac, and amniotic fluid providing support. The final stage of labor will be covered in the next lesson.
1 p5 pregnancy 071210
The document outlines the stages of pregnancy from fertilization to birth. It explains that fertilization occurs when sperm meet an egg in the fallopian tubes. The fertilized egg is called a zygote and begins developing in the uterus over the next 9 months as the placenta, umbilical cord, amniotic sac, and amniotic fluid form to support and protect the growing embryo and fetus until birth. The next lesson will cover labor and delivery.
1 p9 puberty 301110
Puberty is the name given to sexual maturity, which normally happens between the ages of 10-16. During this time for girls, breasts develop, the hips widen, and menstrual periods begin. For boys, the voice deepens, facial hair grows, and the testes and penis enlarge. The opening to the uterus is called the cervix. If an egg is not fertilized, the thick spongy lining of the uterus breaks down and sheds, in a process called menstruation which on average lasts 28 days.
1 p5 chemical changes 121110
Chemical changes were discussed, including a homework review, word equations for burning magnesium reacting with oxygen to form magnesium oxide, and conclusions that chemical reactions produce new substances, involve temperature changes, and changes in appearance. The class reviewed learning about magnesium and oxygen reacting to form magnesium oxide, changes when solutions were mixed, and the three common traits of chemical reactions.
1 p9 chemical changes 091010
This document provides an overview of a chemistry lesson on chemical changes and reactions. It includes instructions for homework, a review of elements and compounds, examples of chemical reactions like burning fuel and digestion, and a demonstration experiment of burning magnesium. Students are asked to observe the experiment, note the appearance of magnesium before and after burning, and write the word equation for the reaction with magnesium and oxygen forming magnesium oxide.
2p9 metals and acids 101110
This document summarizes an experiment on the reactions of metals with acids. Metals like magnesium and zinc reacted vigorously with hydrochloric and sulfuric acids to produce hydrogen gas. No reaction occurred between copper and the acids, updating the reactivity series. The general reaction of metals with acids produces salts with the metal as the first name and acid as the last name, such as magnesium chloride from magnesium and hydrochloric acid.
2p9 metals and acids 121110
This document discusses metals reacting with acids to form salts and hydrogen gas. The key points are:
1) Metals react with acids according to the general equation: Metal + Acid → Salt + Hydrogen.
2) Salts have the metal as the first name and acid as the last name, such as magnesium chloride from magnesium and hydrochloric acid.
3) Copper is less reactive than magnesium and zinc based on experiments showing these metals reacting with hydrochloric and sulfuric acids to form salts and hydrogen while copper did not react.
2p9 metals and acids 171110
This document discusses a metal displacement experiment where different metals are added to metal salt solutions. The goal is to see if a displacement reaction occurs where the added metal replaces the metal in the salt solution. Results are recorded and word equations are written for reactions that took place. A reactivity series is also presented that lists metals from most reactive to least reactive, and it is concluded that a displacement will only occur if the added metal is higher in the reactivity series than the metal already in solution.
1 p5 cells 191110
All living things are made of cells, which are the basic building blocks of life. Animal cells contain a nucleus that controls cell activities, cytoplasm for chemical reactions, and a cell membrane that regulates what enters and exits. Plant cells have these parts as well as a cell wall, vacuoles for storage, and chloroplasts for photosynthesis. While animal and plant cells share key components like the nucleus and cytoplasm, plant cells differ in having a cell wall, vacuoles, and chloroplasts.
1 p9 cells 221110
All living things are made of cells, which are the basic building blocks of life. Animal cells contain a nucleus that controls cell activities, cytoplasm in the center where reactions occur, and a cell membrane that regulates what enters and exits. Plant cells have these parts as well as a cell wall, vacuoles that store water, and chloroplasts for photosynthesis. While animal and plant cells share some components, plant cells differ in having a cell wall, vacuoles, and chloroplasts.
2p9 reaction rates 221110
This document describes two experiments on the effects of concentration and temperature on reaction speed. The concentration experiment found that calcium carbonate reacted faster with concentrated hydrochloric acid due to more reactant particles. The temperature experiment found that the sodium thiosulfate reaction was faster at 55°C than at 22°C, suggesting higher temperatures increase reaction speed by giving particles more energy to collide. Both experiments demonstrate that higher concentrations and temperatures increase reaction speed.
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3 e electronics 161110 revised
- 1. Electricity 3E: Tuesday 16th November
- 2. Unit 2: Using Electricity Using Electricity From the wall socket • Household appliances • Safety A.C. and D.C. • Circuit diagrams • Current and Voltage • Battery and Transformer Resistance • Variable resistors and their uses • Electrical Power • Lamps and heaters Useful circuits • Series and Parallel • Fault finding Behind the wall • The mains supply • Domestic electricity meter Movement from Electricity • Electric motor
- 3. Using Electricity • What is electricity? • Why do we use it? • What is a circuit?
- 4. Model of current flow Bakery Supermarket 1. Bakery Manager loads bread onto the vans and sends them off 2. As soon as the vans start to move, bread is delivered to the supermarket. 3. All the vans move at the same speed. 4. If the manager speeds the vans up, more bread is delivered to the supermarket in a certain time. 5. If the manager loads more bread on each van, more bread is delivered to the supermarket in a certain time. The vans deliver the bread to the supermarket where the shoppers take it away. The empty vans go back to the bakery to get more bread. Each van takes bread to the supermarket. Empty vans collect bread at the bakery.
- 5. Model of current flow 1. The battery provides energy and makes the charges move. 2. As soon as the charges start to move, energy is delivered to the bulb 3. All the charges move at the same speed 4. If the charges speed up, more energy is delivered to the bulb in a certain time. 5. If more energy is carried by each charge, more energy is delivered to the bulb in a certain time. Charges deliver energy to the bulb where it is transferred to heat and light. Charges return to the battery to collect more energy. Charges are atom sized particles already in the wire. The charges carry energy. Charges collect energy at the battery. The electric current (Amperes) is the number of charges passing a point each second