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Calculate the reactance of a 100-pF capacitor at an operating frequency of 2 MHz?

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Calculate the reactance of a 100-pF capacitor at an operating frequency of 2 MHz?

(a) 200Ω

(b) 700.16Ω

(c) 796.2Ω

(d) 2Ω

I got this question during a job interview.

This intriguing question originated from Tuned Circuits in chapter Fundamentals of Electronics of Avionics

1 Answer

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Correct choice is (b) 700.16Ω

For explanation: Capacitative reactance =Xc= 1/2πfC = 1/(2 x 3.14 x 2 x 10^6 x 100 x 10^-12) = 796.2Ω.

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