1.

how many time constants will elapse before the power delovered by the battery drops to half of its maximum value in an RC circuit ?

Answer»

Solution :`POWER = CV^2 = q xx V`
` Now, QV/2 = qV xx e^(-t/rc)`
` rArr1/2 = e^(-t/rc)`
` rArr t/rc = - In (0.5) `
` = -(-0.69) = 0.69.`


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