Electricity & magnetism
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Electricity can be static or current. Static electricity builds up on the surface of objects and does not flow, while current electricity involves the flow of electrons. There are two types of current - direct current where electrons flow in one direction, and alternating current where electrons change direction periodically. Coulomb's law states that the electrical force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. Electric circuits can be either series circuits where components are lined up along one path, or parallel circuits which have multiple branching paths.
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Static electricity is built up when certain materials are rubbed together or pulled apart, causing an imbalance of electrons between the materials. This occurs because atoms are made up of protons and electrons, and rubbing or pulling can cause some atoms to lose or gain electrons. Current electricity involves the controlled flow of electrons through a circuit. A series circuit has one path for current to flow through components in sequence, while a parallel circuit has multiple paths for current to split between.
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1. Atoms contain negatively charged electrons that orbit the positively charged nucleus, which contains positively charged protons and uncharged neutrons.
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Static electricity is an imbalance of electric charges within or on the surface of a material. The charge remains until it is able to move away by means of an electric current or electrical discharge.
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When we walk on a carpeted floor and getting shock when touching a door knob or any other metal object is one of the best examples of static electricity.
Clothes stuck to one another after being in the dryer is another example of static electricity.
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1. Static electricity is a stationary electric charge produced by friction that causes sparks or attraction of dust. The triboelectric effect produces charge when objects rub against each other.
2. Materials are either conductors that allow electron flow or insulators that impede electron flow. Common conductors include metals and aqueous salt solutions, while common insulators include plastics, glass, and dry air.
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Static electricity is built up when certain materials are rubbed together or pulled apart, causing an imbalance of electrons between the materials. This occurs because atoms are made up of protons and electrons, and rubbing or pulling can cause some atoms to lose or gain electrons. Current electricity involves the controlled flow of electrons through a circuit. A series circuit has one path for current to flow through components in sequence, while a parallel circuit has multiple paths for current to split between.
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Static electricity is an excess electric charge that builds up on the surface of an object. This charge remains until it can discharge to another object or the ground. It is created when two materials contact and separate, causing electrons to transfer between them. Examples include rubbing a balloon on hair and it sticking to a wall, or shuffling feet on carpet and touching a metal object. Dynamic electricity can be moved and measured using units like coulombs and volts. Ohm's law relates voltage, current, and resistance in a circuit. Conductor resistance depends on factors like length, cross-sectional area, and material. Kirchhoff's law states the total current entering a branching node equals the total current leaving.
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Static electricity is an imbalance of electric charges within or on the surface of a material. The charge remains until it is able to move away by means of an electric current or electrical discharge.
Here are some examples of static electricity in our day to day life:
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Electricity & magnetism
- 2. Electricity • Electricity is a kind of energy which menifests itself by attraction,repulsion and produces light,heat,chemical decomposition and many other phenomena. • The flow of electron is called elctric current. • Electricity can be divided as static electricity and current electricity.
- 3. Static electricity • When a certain substances are rubbed by certain materials the property of attracting light objects like pieces of paper,thread or cotton develops • Vulcanite rod rubbed with fur has this property so also combing hair with some synthetic comb produces the attrecting properties • A substance which has this property is called to electrified or charged with electricity and this electricity is called static electricity
- 4. • The build up of an electric charge on the surface of an object. • The charge builds up but does not flow. • Static electricity is potential energy. It does not move. It is stored.
- 5. Static dishcharge… • Occurs when there is a loss of static electricity due to three possible things: •Friction - rubbing •Conduction – direct contact •Induction – through an electrical field (not direct contact)
- 6. Current electricity • Flow of electron is called electric current. • The flow occurs through a conducter. • Current: The flow of electrons from one place to another. • Measured in amperes (amps)
- 7. There are two types of current .. • Direct current (DC) – Where electrons flow in the same direction in a wire.
- 8. • Alternating Current (AC) – electrons flow in different directions in a wire
- 9. Coulomb’s law • Electrical force is directly proportional to the product of the electrical charges and inversely proportional to the square of the distance • This is known as coulmb’s law.
- 10. • F is the electrical force. • K = constatant. • q1 = electrical charge of object 1. • q2 =electrical charge of object 2. • d = distance b/w two objects.
- 11. There are two type of circuit 1.Series Circuit: • the components are lined up along one path. If the circuit is broken, all components turn off.
- 12. Series Circuit
- 13. Parallel circuit 2.Parallel Circuit – • there are several branching paths to the components. If the circuit is broken at any one branch, only the components on that branch will turn off.
- 14. Parallel Circuit