Question

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(a) Increases in the first circuit and decreases in the other(b) Increases in both the circuits(c) Decreases in both the circuits(d) Decreases in the first circuit and increases in the other

Answer 1

Correct Answer is : Option D

Decreases in the first circuit and increases in the other

Explanation :

For the first circuit i=V/Z

=V/ √R²+ω²L²−−−−−−−−−

∴Increase in    ω will decrease the value of I    

For second circuit:

i=V/√R2+1/ω²C²

∴ an increase in ω will increase the i value

Answer 2

Option D is correct.

Decreases in the first circuit and increases in the other.