(a) Explanation Given info: The current in the R L circuit increases to 95 % of its final value and the time taken by the current is 2.24 s . Since, the initial value of the current is 95 % of the final value. I = ( 95 % ) I final = 0.95 I final Here, I is the initial value of current. I final is the final value of current. Formula to calculate the instantaneous current in the circuit is, I = ε R ( 1 − e − t τ ) (1) Here, ε is the induced emf in the circuit. τ is the time constant. t is instantaneous time. R is the resistance of the circuit. Formula to calculate the final current in case of induced emf is, I final = ε R (2) Substitute ε R for I final in the equation (1). I = I final ( 1 − e − t τ ) (3) Substitute 0.95 I final for I and 2 (b) To determine The resistance for the R L circuit.

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ISBN: 8220103026918

Author: Walker

Publisher: PEARSON

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Voltage Across Inductor

An actor is a passive electrical component that consists of a coil bent in the form of wire which uses electromagnetism to produce electric current through the coil. When the electric current flows through a conductor that is the coil, a magnetic flux is…

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Chapter 23, Problem 57PCE

(a)

To determine

The time constant for the RL circuit.

(b)

To determine

The resistance for the RL circuit.

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Chapter 23, Problem 56PCE

Chapter 23, Problem 58PCE

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The time constant for the R L circuit.

Solution Summary: The author explains the time constant for the RL circuit and the formula to calculate the instantaneous current in the circuit.

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The time constant for the RL circuit.

The resistance for the RL circuit.

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Chapter 23 Solutions