At time t=0, a battery of 10 V is connected across points A and B in the given circuit. If the capacitors have no charge initially, at what time (in seconds) does the voltage across them beocme 4V? `[Take : In 5 = 1.6, In3 = 1.1]`.
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Answer

2

Explanation

`4=10(1-e^(-t//4))`
`therefore t=2 sec` Here, `q=(epsilon_0AV)/(d)`