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Consider an R C circuit with E = 12.0 V , R = 155 ? , and C = 55.8 ? F . Part A

ID: 3898369 • Letter: C

Question

Consider an RC circuit with E = 12.0V ,R = 155? , and C = 55.8?F .

Part A Find the time constant for the circuit. ? =
ms
Part B Find the maximum charge on the capacitor. qmax =
?C
Part C Find the initial current in the circuit. Consider an RC circuit with E = 12.0V ,R = 155? , and C = 55.8?F .

Consider an RC circuit with E = 12.0V ,R = 155? , and C = 55.8?F .

Consider an RC circuit with E = 12.0V ,R = 155? , and C = 55.8?F .

Part A Find the time constant for the circuit. ? =
ms
Part A Find the time constant for the circuit. ? =
ms
? =
ms ? =
ms
Part B Find the maximum charge on the capacitor. qmax =
?C
Part B Find the maximum charge on the capacitor. qmax =
?C
qmax =
?C qmax =
?C
Part C Find the initial current in the circuit. ? =
ms

Explanation / Answer

the time constant for a rc circuit is given by


T = R x C


so T = 155 x 55.8 x 10-6


T = 8.649 ms


so the time constant is 8.649 milli seconds



maximum charge   q = CV



q= 55.8 x 10-6 x 12


q= 669.6 x 10-6 columb


initial current i = V/R


i = 12 /155


i = 0.0774 A


so the initial current is 0.0774 A