| Assertion: If the frequency of alternating current in an A.C. circuit consisting inductance coil is increased then current gets decreased. |
| Reason: The current is inversely proportional to frequency of alternating current. |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: A
Solution :
When frequency of alternating Current is increased, the effective resistance of the inductance coils increases\[\left( {{X}_{L}}={{\omega }_{L}}=2\pi fL \right)\]. Current in the circuit containing inductor is given by \[I=\frac{V}{{{X}_{L}}}=\frac{V}{2\pi \,f\,L}\]. As inductive resistance of the inductor increases. Current in the circuit decreases.
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