Current Electricity

Question 1

Conductors

Answer 1

Substances which allow electric current to flow through them freely

Question 2

Insulators

Answer 2

Substances which do not allow electric current to flow through them

Question 3

Closed circuit

Answer 3

Needed for the current to flow, if there is a break in a circuit then the current won’t flow

Question 4

Energy provided

Answer 4

By a battery or power pack, that is needed to move the current around the circuit

Question 5

The battery pumps electrons

Answer 5

From its negative end around the circuit

Question 6

The electrons are attracted

Answer 6

back to the positive end of the battery

Question 7

Potential difference

Answer 7

The difference in electrical pressure between the positive and negative end of the battery/power pack

Question 8

Whenever there is a potential difference

Answer 8

Electricity will flow

Question 9

This potential difference is known as

Answer 9

Voltage and is measured in volts

Question 10

Resistance

Answer 10

Is the opposition to the flow of electrons. The unit is the Ohm and it is measured using an ohmmeter

Question 11

Resistor

Answer 11

If a resistor is placed in an electric circuit, it will slow down the flow of electrons

Question 12

Main supply

Answer 12

The electricity in our homes, supplied by the ESB

Question 13

Sockets

Answer 13

Are tapped off at points along this ring circuit

Question 14

Fuse

Answer 14

A safety device that prevents the circuit from overheating

Question 15

A circuit breaker

Answer 15

is used in the fuse board of the home, and this trips to stop the flow of current from entering the house

Question 16

Circuit breaker

Answer 16

A circuit breaker is used in the fuse board of the home, and this trips, to stop the flow of current from entering the house.

Question 17

The watt (W)

Answer 17

The watt is the unit of electrical power.

Question 18

The ESB charges a fee for the number of…

Answer 18

Kilowatts (1000 watts) used per hour

Question 19

ESBs unit of electricity

Answer 19

ESB’s unit of electricity kilowatt hour (kWh)

Question 20

Kilowatt hour

Answer 20

Is the electrical energy used by a 1kW appliance running for 1 hour

Question 21

Electric current

Answer 21

Is a flow of electric charge

Question 22

Conductors

Answer 22

Substances which allow electric current to flow through them freely

Question 23

Insulators

Answer 23

Substances which do not allow electric current to flow through them

Question 24

Closed circuit

Answer 24

Needed for the current to flow, if there is a break in a circuit then the current won’t flow

Question 25

Energy provided

Answer 25

By a battery or power pack, that is needed to move the current around the circuit

Question 26

The battery pumps electrons

Answer 26

From its negative end around the circuit

Question 27

The electrons are attracted

Answer 27

back to the positive end of the battery

Question 28

Potential difference

Answer 28

The difference in electrical pressure between the positive and negative end of the battery/power pack

Question 29

Whenever there is a potential difference

Answer 29

Electricity will flow

Question 30

This potential difference is known as

Answer 30

Voltage and is measured in volts

Question 31

Resistance

Answer 31

Is the opposition to the flow of electrons. The unit is the Ohm and it is measured using an ohmmeter

Question 32

Resistor

Answer 32

If a resistor is placed in an electric circuit, it will slow down the flow of electrons

Question 33

Electric current

Answer 33

Is a flow of electric charge