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A Series Circuit Consists of a Resistor R=32ΩR = 32 \Omega

Question 5

Multiple Choice

A series circuit consists of a resistor R=32ΩR = 32 \Omega , an inductor with L=4HL = 4 H , a capacitor with C=0.003125 FC = 0.003125 \mathrm {~F} , and a 2424 -V battery. If the initial charge is 0.0008 C and the initial current is 0, find the current I(t) at time t.


A) I(t) =0.742e4tsin(8t) I ( t ) = 0.742 e ^ { - 4 t } \sin ( 8 t )
B) I(t) =e4t160cos(8t) I ( t ) = \frac { e ^ { - 4 t } } { 160 } \cos ( 8 t )
C) I(t) =e4t160cos(8t) 12I ( t ) = \frac { e ^ { - 4 t } } { 160 } \cos ( 8 t ) - \frac { 1 } { 2 }
D) I(t) =0.742e8tI ( t ) = 0.742 e ^ { - 8 t }
E) I(t) =e4t160(0.003125cos(4t) +8sin(4t) ) 12I ( t ) = \frac { e ^ { - 4 t } } { 160 } ( 0.003125 \cos ( 4 t ) + 8 \sin ( 4 t ) ) - \frac { 1 } { 2 }

Correct Answer:

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