Question

Graph shows variation of source emf V and current i in a series RLC circuit, with time.

(A) The current leads the emf in the circuit.

(B) The circuit is more inductive than capacitive.

(C) To increase the rate at which energy is transferred to the resistive load, L should be decreased

(D) To increase the rate at which energy is transferred to the resistive load, C should be increased.

Answer 1

Correct option- (B) The circuit is more inductive than capacitiveAND (D) To increase the rate at which energy is transferred to the resistive load, C should be increased.

Explanation:-

It is apparant from the graph that emf attains its maximum value before the current does, therefore current lags behind emf in the circuit. Nature of the circuit is inductive. Value of power factor cos increases by either decreasing L of increasing C.