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The effect of frequency on the resistance of a wire is called ________

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The effect of frequency on the resistance of a wire is called ________

(a) skin effect

(b) I2R loss

(c) ohmic effect

(d) threshold effect

I got this question during an online exam.

My doubt stems from ZCD topic in section Angle Modulation of Analog Communications

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Right answer is (a) skin effect

Explanation: Skin effect becomes more and more apparent as frequency increases as skin depth becomes smaller. It is due to alternating current flowing through the outer surface of conducting material. It refers to the increase of wire resistance with frequency.

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