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Bandwidth is the difference of_____________________ frequencies.

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Bandwidth is the difference of_____________________ frequencies.

(a) half power

(b) full power

(c) double power

(d) wattless

The question was asked in final exam.

I'm obligated to ask this question of Bandwidth topic in chapter Resonance in AC Circuits of Basic Electrical Engineering

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The correct answer is (a) half power

The explanation: Current for the end frequencies of bandwidth is 1/√2 times the maximum current. So, power at the end frequencies of bandwidth is half the maximum power. So, bandwidth is the difference of half power frequencies.

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