The document discusses electrical circuits and Ohm's Law. It defines key concepts like voltage, current, resistance and their relationships. Voltage is measured in volts and is the "push" that drives current through a circuit. Current is measured in amps and is the flow of electrons. Resistance opposes the flow of current. Ohm's Law states that current is directly proportional to voltage and inversely proportional to resistance. Circuits can be connected in series or parallel, affecting how current and voltage are distributed.
this ppt was created by me and i hope it helps to all of you out there. peace
objective : school projects
personal reference
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i know its a bit lengthy but im 100% sure it will be helpful
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this ppt was created by me and i hope it helps to all of you out there. peace
objective : school projects
personal reference
teachers reference
i know its a bit lengthy but im 100% sure it will be helpful
plz leave a like
thxs
In this presentation I defined the series and parallel circuit's and their behaviour how to these circuit works and their advantages and disadvantages it may be help you to understand their use.
Malaysia SPM syllabus Chapter 7 Part 3: Series and Parallel Circuits
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7. The CELL The cell stores chemical energy and transfers it to electrical energy when a circuit is connected. When two or more cells are connected together we call this a Battery . The cells chemical energy is used up pushing a current round a circuit.
8. What is an electric current? An electric current is a flow of microscopic particles called electrons flowing through wires and components. + - In which direction does the current flow? from the Negative terminal to the Positive terminal of a cell.
9. simple circuits Here is a simple electric circuit. It has a cell, a lamp and a switch. To make the circuit, these components are connected together with metal connecting wires. cell lamp switch wires
10. simple circuits When the switch is closed, the lamp lights up. This is because there is a continuous path of metal for the electric current to flow around. If there were any breaks in the circuit, the current could not flow.
11. circuit diagram cell switch lamp wires Scientists usually draw electric circuits using symbols;
12. circuit diagrams In circuit diagrams components are represented by the following symbols; cell battery switch lamp motor ammeter voltmeter buzzer resistor variable resistor
13. types of circuit There are two types of electrical circuits; SERIES CIRCUITS PARALLEL CIRCUITS
14. The components are connected end-to-end, one after the other. They make a simple loop for the current to flow round. SERIES CIRCUITS If one bulb ‘blows’ it breaks the whole circuit and all the bulbs go out.
15. PARALLEL CIRCUITS The current has a choice of routes. The components are connected side by side. If one bulb ‘blows’ there is still be a complete circuit to the other bulb so it stays alight.
16. measuring current Electric current is measured in amps (A) using an ammeter connected in series in the circuit. A
17. measuring current A A This is how we draw an ammeter in a circuit. SERIES CIRCUIT PARALLEL CIRCUIT
18.
19. copy the following circuits and fill in the missing ammeter readings. ? ? 4A 4A 4A 3A ? ? 1A ? 3A 1A 1A
20. measuring voltage The ‘electrical push’ which the cell gives to the current is called the voltage . It is measured in volts (V) on a voltmeter V
21. Different cells produce different voltages. The bigger the voltage supplied by the cell, the bigger the current. measuring voltage Unlike an ammeter a voltmeter is connected across the components Scientist usually use the term Potential Difference (pd) when they talk about voltage.
22. measuring voltage V This is how we draw a voltmeter in a circuit. SERIES CIRCUIT PARALLEL CIRCUIT V
26. measuring current & voltage copy the following circuits on the next two slides. complete the missing current and voltage readings. remember the rules for current and voltage in series and parallel circuits.