Q.1
Which of the following statements is true?
  • A flow of electrons around a circuit is called an electric current
  • A switch only turns the current off
  • An open switch allows a small amount of current through it
  • Two identical bulbs in a series circuit are brighter than one
Q.2
Wires are usually coated in plastic because .......
  • plastic can be lots of different colors
  • plastic helps the wires bend
  • plastic helps the wires conduct electricity
  • plastic is an insulator
Q.3
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
Q.4
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.5
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.6
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.7
If the size of a battery in a complete circuit increases .......
  • the current decreases
  • the current increases
  • the current stays the same
  • the voltage stays the same
Q.8
Two bulbs are in series in a complete circuit. If the voltage increases .......
  • 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.9
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.10
Which of the following statements is true?
  • A voltmeter is connected in series to measure voltage
  • An ammeter is connected in parallel to measure current
  • Different sized bulbs in parallel have a different sized current flowing through them
  • In a series circuit the current through different bulbs adds up to current coming from the battery
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