Electricity

Question 0

DC

Answer 0

Direct

A battery

Question 1

AC

Answer 1

Alternative

The mains supply in our country

Question 2

Voltage

Answer 2

The strength of the energy sources

Hw much energy is transferred per coulomb of charge

Question 3

Ammeter

Answer 3

Measures the current

Has very little resistance since it is part of the circuit

Question 4

Voltmeter

Answer 4

Tells you how many joules of energy are being converted to heat and light per coulomb of charge passing through the lamp

Large resistance

Question 5

Earth wires

Answer 5

Ensures the outer casing is at 0v
Provides a very low resistance path for the current
The fuse will blow and will disconnect the live supply

Question 6

Fuses

Answer 6

Wires that melt when a certain current size is exceeded

Must be replaced after having been blown

Question 7

Circuit breakers

Answer 7

Used in domestic consumer units rather than fuses
Can be reset
Operated magnetically
Disconnect the live supply at much lower current levels

Question 8

Fuse

Answer 8

Box

Question 9

LED

Answer 9

—>|—

Question 10

Variable resistor

Answer 10

Box with arrow going through it

Question 11

Indicator lamp

Answer 11

Cross in a circle

Question 12

Diode

Answer 12

—|<—

Question 13

Thermistor

Answer 13

Box with a line through it

Question 14

Light dependant resistor

Answer 14

Two arrows pointing to a box