Same current is flowing in two alternating circuits. The fi…

Physics Alternating Current AC Circuits MCQ (Single Correct)

Same current is flowing in two alternating circuits. The first circuit contains only inductance and the other contains only a capacitor. If the frequency of the e.m.f. of ac is increased, the effect on the value of the current will be

Increases in the first circuit and decreases in the other

Increases in both the circuits

Decreases in both the circuits

Decreases in the first circuit and increases in the other

Text Solution

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The correct answer is:

Circuit one contains inductance & two contains capacitor.

As frequency increases, increases, will decrease.
Hence in first circuit, increases hence current decreases. And in second circuit, decreases hence current will increase.
∴ current decreases in first and increases in other.