UNIT 1

Question 1

function of ammeter

Answer 1

measures the current of a circuit

Question 2

function of voltmeter

Answer 2

measures the voltage of a circuit

Question 3

function of resistor

Answer 3

reduces the flow of charge

Question 4

function of cell

Answer 4

provides energy for the circuit

Question 5

function of battery

Answer 5

same as a cell (has multiple cells joined together)

Question 6

the function of bulb/lamp

Answer 6

converts electrical energy into light energy

Question 7

function of switch

Answer 7

has the ability to stop the flow of electrons around the circuit

Question 8

what is current?

Answer 8

the rate of flow of charge

Question 9

what is resistance measured in?

Answer 9

Ohms

Question 10

Resistance increased with temperature, true or false

Answer 10

True

Question 11

can energy be created or destroyed?

Answer 11

no

Question 12

can energy be transferred into other forms of energy?

Answer 12

yes

Question 13

double glazing windows reduce heat loss due to…

Answer 13

conduction

Question 14

where does conduction happen?

Answer 14

in solids

Question 15

convection happens in…

Answer 15

liquids and gases (fluids)

Question 16

payback time =

Answer 16

installation cost / annual savings + (feeding tariff)

Question 17

when you heat up a liquid/gas, the particles gain energy and…

Answer 17

move faster

Question 18

What type of current flows in mains electricity?

Answer 18

a.c. ( alternating current )

Question 19

What is the UK’s mains supply voltage?

Answer 19

230V

Question 20

In which wire are switches and fuses placed?

Answer 20

live

Question 21

Which two wires complete a mains circuit?

Answer 21

live + neutral