Consider the AC circuit in the figure. The frequency of the AC source is adjuste

Question

Consider the AC circuit in the figure. The frequency of the AC source is adjusted while its voltage amplitude is held constant. The lightbulb will glow the brightest at which of the following?

A.high frequencies

B.the brightness will be the same at all frequencies

C.low frequencies

Consider the AC circuit in the figure. The frequency of the AC source is adjusted while its voltage amplitude is held constant. The lightbulb will glow the brightest at which of the following? A.high frequencies B.the brightness will be the same at all frequencies C.low frequencies

Explanation / Answer

(C) LOW frequencies . at low frequencies the impedence of the inductor is low so the current drawn from the voltage source is maximum so the brightness is maximum at low frequencies.

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