In an RL filter circuit, the cutoff frequency is defined as the frequency at Which:
A)the outputVoltage drops to 33% of maximum.
B)the outputVoltage drops to 70% of maximum.
C)the outputVoltage is cutoff, with minimum or zero output.
D)the outputVoltage drops to 66% of maximum.

Question

Quizplus · Accepted Answer

The cutoff frequency in an RL filter circuit is defined as the frequency at which the output voltage drops to 70% of its maximum value. This corresponds to the point where the reactance of the inductor equals the resistance in the circuit, leading to a -3dB point in filter design.

In an RL Filter Circuit, the Cutoff Frequency Is Defined