If two components are connected in parallel, how is the potential difference across each split?
  • It is dependent on which components are used
  • It is dependent on the resistance of the components used
  • One component gets twice as much voltage as the other
  • They are the same
What is the total resistance in a circuit if the potential difference is 12 V and the current flowing through the circuit is 3 A?
  • 2 Ω
  • 3 Ω
  • 4 Ω
  • 5 Ω
Two 2 Ω resistors are placed in parallel in a circuit. If the potential difference supplied to the circuit is 10 V, what size is the current which passes through each resistor?
  • 5 A
  • 10 A
  • 20 A
  • 40 A
Calculate the current in a circuit when the voltage of the circuit is 5 V and the circuit has a total resistance of 5 Ω.
  • 1A
  • 2A
  • 10A
  • 25A
Two circuits are set up and both circuits contain two bulbs. One circuit is set up so that the bulbs are connected in series, whilst the other is set up so that the bulbs are connected in parallel. In which circuit will the bulbs be brightest if both circuits have the same resistance and the same voltage applied?
  • Circuit in parallel
  • Circuit in series
  • They will both have the same brightness
  • It is impossible to tell
If the voltage in a circuit remains constant but the resistance is increased, what will happen to the current?
  • Current decreases
  • Current increases
  • Current remains the same
  • Values for the voltage and resistance are required to answer this
What is the current through a circuit which contains three resistors of size 3 Ω, 5 Ω and 7 Ω respectively which are placed in series when a potential difference of 12 V is applied?
  • 0.8 A
  • 1 A
  • 2 A
  • 10 A
What is the definition of current?
  • Flow of atoms through a circuit
  • Flow of electrons through a circuit
  • The amount of resistance an electron experiences when traveling through a circuit
  • The energy which each electron has when flowing through a circuit
Why does a 60 W equivalent fluorescent bulb use less energy than a 60 W filament bulb?
  • The electrons flow through the fluorescent bulb at a smaller voltage which reduces the energy used
  • The electrons flow through the fluorescent bulb with a smaller current, thus reducing the energy used
  • The fluorescent bulb has a smaller resistance than the filament bulb
  • They use the same amount of energy
If the voltage in a circuit is increased whilst the resistance remains constant, what will happen to the current in the circuit?
  • Current decreases
  • Current increases
  • Current remains the same
  • Values for the voltage and resistance are required to answer this
0 h : 0 m : 1 s

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