Charge (Q = I t)
AQA GCSE Physics calculation · part of the free Calculation Climb
Charge = current × time: Q = I t. Current in amps (A), time in seconds, charge in coulombs (C).
How to do it — step by step
- charge = current × time.
- Q = I t. (Rearrange: time = charge ÷ current.)
Worked example
A 3 A current flows for 10 s.
Q = 3 × 10 = 30 C
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