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? |
Decrease; decrease; increase No effect; decrease; increase Increase; increase; decrease No effect; decrease; decrease |
No effect; decrease; increase |
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. |