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For an R-L-C circuit, we get [D – (K1 + K2)][D – (K1 – K2)] i = 0. If K2 is positive, then the curve will be?

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For an R-L-C circuit, we get [D – (K1 + K2)][D – (K1 – K2)] i = 0. If K2 is positive, then the curve will be?

(a) damped

(b) over damped

(c) under damped

(d) critically damped

I got this question in semester exam.

The above asked question is from DC Response of an R-L-C Circuit in portion Transients of Network Theory

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Right choice is (b) over damped

The explanation: For an R-L-C circuit, we get [D – (K1 + K2)][D – (K1 – K2)] i = 0. If K2 is positive, then the curve will be over damped response.

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