A steady current of 0.50 A flows through a lamp for 2.0 minutes. How much charge passes through the lamp?
Correct answer C. 60 C
Explanation
Charge Q = It = 0.50 A × 120 s = 60 C. Converting 2.0 minutes to 120 seconds is the key step; using 2 s gives the wrong value of 1.0 C.
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