A lamp is connected is series with a a capacitor and an AC source, what happens if the capacity of the capacitor is reduced ?
A lamp is connected is series with a a capacitor and an AC source, what happens if the capacity of the capacitor is reduced ?
A. The lamp shines more brightly
B. The lamp shines less brightly
C. There is no change in the brightness of the lamp
D. Birghtness may increase or decrease depending on the frequency of the AC
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Correct Answer - B
The lamp shines less brightly because, then capacity of the capaictor is reduced, the capacitive reactance ` ( X_C = ( 1 )/ ( omega C ) ` increases and hence , the current through the lamp decreases.
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