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Calculate the resistance in an inductive circuit whose time constant is 2s and the inductance is 10H.

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Calculate the resistance in an inductive circuit whose time constant is 2s and the inductance is 10H.

(a) 7ohm

(b) 10ohm

(c) 2ohm

(d) 5ohm

I have been asked this question at a job interview.

Query is from Growth in an Inductive Circuit topic in section Inductance in a DC Circuit of Basic Electrical Engineering

1 Answer

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Correct option is (d) 5ohm

To explain I would say: We know that: Time constant = L/R

Substituting the values from the given question, we get R=5ohm.

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