The current in a wire varies with time according to the equation I = 4 +2 t, where I is in ampere and t is in second. The quantity of charge which has to be passed through a cross-section of the wire during the time t = 2 s to t = 6 s is
Text Solution
Verified by ExpertsThe correct answer is:
B
Let dq be the charge which passes in a small interval of time dt. Then
dq = Idt
or dq = (4+2t)dt
On integrating, we get,
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