Electricity And Magnetism

Question 1

Ammeter

Answer 1

A device for measuring electric current in a circuit

Question 2

Amps

Answer 2

Unit of measurement of electric current, symbol A

Question 3

Atom

Answer 3

A neutral particle; everything is made of atoms

Question 4

Attract

Answer 4

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

Question 5

Battery

Answer 5

Two or more electrical cells joined together

Question 6

Cell

Answer 6

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

Question 7

Conductor

Answer 7

A material that conducts charge or energy well, such as a metal or graphite.

Question 8

Core

Answer 8

A rod of a magnetic material placed inside a coil to make the magnetic field of an electromagnet stronger.

Question 9

Current

Answer 9

The flow of electrical charge (electrons) around a complete circuit per second.

Question 10

Electric charge

Answer 10

A property of a material or particle that can be positive or negative.

Question 11

Electrical field

Answer 11

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

Question 12

Electromagnet

Answer 12

A temporary magnet produced using an electric current.

Question 13

Electron

Answer 13

A negatively charged particle found in atoms. Electrons flow through a wire when a current flows.

Question 14

Insulator

Answer 14

A material that does not conduct electricity or transfer energy well.

Question 15

Lightning

Answer 15

A current through the air that produces light and sound.

Question 16

Magnetic field

Answer 16

A region where there is a force on a magnet or magnetic material.

Question 17

Magnetic field lines

Answer 17

Imaginary lines that show the direction of the force on magnetic material.

Question 18

Magnetic material

Answer 18

A material that is attracted to a magnet, such as iron, steel, nickel, cobalt

Question 19

Magnetise

Answer 19

Make into a magnet

Question 20

Motor

Answer 20

A component or machine that spins when a current flows through it.

Question 21

Negative

Answer 21

The charge on an electron, or on an object that has had electrons transferred to it.

Question 22

Neutral

Answer 22

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

Question 23

Neutron

Answer 23

A neutral particle found in atoms

Question 24

Ohms

Answer 24

The unit of resistance

Question 25

Parallel

Answer 25

A circuit in which there are two or more paths or branches for the current.

Question 26

Positive

Answer 26

The charge on a proton, or on an object that has had electrons transferred from it.

Question 27

Potential difference

Answer 27

A measure of the push of a cell or battery, or the energy that the cell or battery can supply.

Question 28

Proton

Answer 28

A positively charged particle found in atoms.

Question 29

Rating

Answer 29

The value of potential difference at which a cell or bulb operates.

Question 30

Relay

Answer 30

Electrical device that uses current flowing through it in one circuit to switch on and off a current in a second circuit.

Question 31

Repel

Answer 31

Be pushed away from each other, for example, like magnetic poles repel or like electrical charges repel.

Question 32

Resistance

Answer 32

How difficult it is for current to flow through a component in a circuit.

Question 33

Series

Answer 33

A circuit in which components are joined in a single loop

Question 34

Switch

Answer 34

A component that controls the current by making or breaking the circuit.

Question 35

Voltage

Answer 35

A measure of the strength of a cell or battery used to send a current around a circuit.

Question 36

Voltmeter

Answer 36

A device for measuring voltage

Question 37

Volts

Answer 37

Units of measurement of voltage, symbol V.