Among the following, which is the right formula for decay in an inductive circuit?(a) i=I(1-e^-t/time constant)(b) i=I(1-e^t /time constant)(c) i=(1-e^-t /time constant)(d) i=I(e^-t /time constant)This question was posed to me in unit test.My question is taken from Analysis of Growth & Decay topic in division Inductance in a DC Circuit of Basic Electrical Engineering

Among the following, which is the right formula for decay in an induct

1.	Among the following, which is the right formula for decay in an inductive circuit?(a) i=I(1-e^-t/time constant)(b) i=I(1-e^t /time constant)(c) i=(1-e^-t /time constant)(d) i=I(e^-t /time constant)This question was posed to me in unit test.My question is taken from Analysis of Growth & Decay topic in division Inductance in a DC Circuit of Basic Electrical Engineering
Answer» Correct option is (d) i=I(e^-t /time CONSTANT) Explanation: The correct formula for decay in an inductive circuit is i=I(e-t /time constant). As the time increases, the CURRENT in the INDUCTOR decreases, the VOLTAGE also increases.

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