Electrical Circuits 02

1. 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

2. 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

3. 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

4. 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

5. 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

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

7. 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

8. 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

9. 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

10. 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

Quiz written by Sue Davison