Q.1
If the size of a battery in a complete circuit is increased:
  • the current decreases
  • the current increases
  • the current stays the same
  • the voltage stays the same
Q.2
Wires are normally made from copper. This is because:
  • copper has a high resistance
  • copper is a very good conductor of electricity
  • copper is cheap
  • copper is expensive
Q.3
Wires are usually coated in plastic because:
  • plastic can be lots of different colours
  • plastic helps the wires bend
  • plastic helps the wires conduct electricity
  • plastic is an insulator
Q.4
Two bulbs are in series in a complete circuit. If the voltage is increased:
  • the bulbs get brighter and the current decreases
  • the bulbs get brighter and the current increases
  • the bulbs get dimmer and the current decreases
  • the bulbs get dimmer and the current increases
Q.5
Two identical bulbs are in parallel in a complete circuit. If one breaks:
  • the other bulb is brighter
  • the other bulb is dimmer
  • the other goes off
  • the other stays on
Q.6
Three identical bulbs are in parallel in a complete circuit. The current in each bulb:
  • is different in all bulbs
  • is greatest in the bulb nearest the battery
  • is the same
  • is three times the current flowing from the battery
Q.7
Two identical bulbs are in parallel in a complete circuit. A third identical bulb is connected in parallel. What happens?
  • All the bulbs are dimmer
  • All the bulbs are the same brightness
  • The third bulb is brighter
  • The third bulb is dimmer
Q.8
The current in a series circuit containing two bulbs:
  • is larger between the bulbs
  • is larger nearer the battery
  • is smaller nearer the battery
  • is the same at every place in the circuit
0 h : 0 m : 1 s