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Worksheet: Current and Charge


For how long would a current of 0.15 A need to be sustained to deliver a charge of 12 C?


After 30 s, the total charge that passes a specific point in a circuit is 12 C. What is the current?


What is the equation which expresses the total charge ( 𝑄 ) delivered by a current ( 𝐼 ) in a period of time ( 𝑑 ) ?

  • A 𝑄 = 𝐼 𝑑
  • B 𝑄 = 𝐼 𝑑
  • C 𝑄 = 𝑑 𝐼
  • D 𝑄 = 𝐼 Γ— 𝑑
  • E 𝑄 = 𝐼 Γ— 𝑑 2


A current of 0.2 A passes through a wire for a period of 60 s. Calculate the total charge delivered by the wire.


Which of the following electrical currents would deliver the greatest charge?

  • A 0.10 A for 35 s
  • B 0.05 A for 60 s
  • C 1.0 A for 1.0 s
  • D 0.25 A for 15 s
  • E 20 A for 0.15 s