Three circuits are shown below in which same alternating current is flowing. What will be the effect on currents in three cases respectively if frequency of alternating emf be increased?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → No effect; decrease; increase
(i) There will be no effect on current flowing. This is because R is not affected by frequency.
(ii) Current will decrease as inductive resistance. $K_L=ωL=2\pi vL$ will increase with increasing frequency.
(iii) Current will increase as capacitance resistance will decrease on increasing the frequency.