Physics-
General
Easy
Question
A steady current 4 A flows in an inductor coil when connected to a 12 V dc source as shown in figure 1. If the same coil is connected to an ac source of 12 V, 50 rad/s, a current of 2.4 A flows in the circuit as shown in figure 2. Now after these observations, a capacitor of capacitance 
is connected in series with the coil and with the same AC source as shown in figure 3 :
The average power supplied to the circuit after connecting capacitance in series is approximately equal to:
- 24 W
- 72 W
- 144 W
- None of these
The correct answer is: 24 W
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A steady current 4 A flows in an inductor coil when connected to a 12 V dc source as shown in figure 1. If the same coil is connected to an ac source of 12 V, 50 rad/s, a current of 2.4 A flows in the circuit as shown in figure 2. Now after these observations, a capacitor of capacitance is connected in series with the coil and with the same AC source as shown in figure 3 :
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A steady current 4 A flows in an inductor coil when connected to a 12 V dc source as shown in figure 1. If the same coil is connected to an ac source of 12 V, 50 rad/s, a current of 2.4 A flows in the circuit as shown in figure 2. Now after these observations, a capacitor of capacitance is connected in series with the coil and with the same AC source as shown in figure 3 :
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A steady current 4 A flows in an inductor coil when connected to a 12 V dc source as shown in figure 1. If the same coil is connected to an ac source of 12 V, 50 rad/s, a current of 2.4 A flows in the circuit as shown in figure 2. Now after these observations, a capacitor of capacitance is connected in series with the coil and with the same AC source as shown in figure 3 :
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