A resistance R and a capacitance C are connected in series to a battery of negligible internal resistance through a key. The key is closed at t = 0 . If after t sec the voltage across the capacitance was seven times the voltage across R , the value of t is

Question

A resistance R and a capacitance C are connected in series to a battery of negligible internal resistance through a key. The key is closed at t = 0 . If after t sec the voltage across the capacitance was seven times the voltage across R , the value of t is, 3 RC ℓ n 2, 2 RC ℓ n 2, 2 RC ln 7, 3 RC ℓ n 7

MARKS App · Accepted Answer

t = 3 RC ln 2

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