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14/07/2021 3:14 pm
Topic starter
(a) Write down the formula which relates electric charge, time and electric current.
(b) A radio set draws a current of 0.36 A for 15 minutes. Calculate the amount of electric charge that flows through the circuit.
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14/07/2021 3:16 pm
(a) Work done = Potential difference x charge moved.
(b) I = 0.36A, t = 15 min = 900 seconds.
Q = I x t
= 0.36 × 900
= 324C