Electricity

Question 1

What is potential difference?

Answer 1

The cell or battery provides the push to make charges move. The push is called a potential difference (p.d.)

Question 2

What is p.d. measured in?

Answer 2

it is measured in volts

Question 3

A cell or battery has a potential difference it is designed to work at. what is this called?

Answer 3

it is called a rating

Question 4

what is an ammeter?

Answer 4

A device for measuring electric current in a circuit.

Question 5

What is amps?

Answer 5

Units of measurement of electric current, symbol A.

Question 6

what are atoms?

Answer 6

A tiny particle containing protons and neutrons in a nucleus, and electrons

Question 7

Attract

Answer 7

Be pulled together, for example, opposite poles of a magnet attract and positive and negative charges attract.

Question 8

Battery

Answer 8

Two or more electrical cells joined together.

Question 9

Cell

Answer 9

A chemical store of energy, which provides the push that moves charges around a circuit.

Question 10

charged up

Answer 10

When materials are rubbed together, electrons move from one surface to the other.

Question 11

Current

Answer 11

Flow of electric charge, usually electrons, in amperes (A).

Question 12

Electrical conductor

Answer 12

A material that allows current to flow through it easily, and has a low resistance.

Question 13

Electrical insulator

Answer 13

A material that does not allow current to flow easily, and has a high resistance

Question 14

Eletric charge

Answer 14

A property of a material, the electric charge can be positive, negative, or neutral.

Question 15

Eletric field

Answer 15

A region where a charged material or particle experiences a force.

Question 16

Electron

Answer 16

Tiny particles that are part of atoms and carry a negative charge.

Question 17

Electrostatic force

Answer 17

Non-contact force between two charged objects.

Question 18

Lightning

Answer 18

Occurs when electrons jump from one charged area to another and produce a big current.

Question 19

Negatively charged

Answer 19

An object that has gained electrons as a result of the charging process.

Question 20

Neutral

Answer 20

Describes an object or particle that has no charge, or in which positive and negative charges cancel out, giving no overall charg

Question 21

Ohms

Answer 21

The units of resistance, symbol Ω.

Question 22

Parellel

Answer 22

If some components are in separate loops in an electric circuit.

Question 23

Positively charged

Answer 23

An object that has lost electrons as a result of the charging process.

Question 24

Potential difference

Answer 24

The amount of energy shifted from the battery to the moving charge, or from the charge to circuit components, in volts (V).