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14.4 Exercise 2

Avg difficulty 2.5

(a) If the current in the circuit of in the figure(b) increases to 90%90 \% of its final value after 5.0 s, what is the inductive time constant? (b) If R=20ΩR = 20 \Omega, what is the value of the self-inductance? (c) If the 20-Ω20 - \Omega resistor is replaced with a 100-Ω100 - \Omega resister, what is the time taken for the current to reach 90%90 \% of its final value?

OpenStax University Physics Volume 2, 14.4 RL Circuits, exercise 2

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Adapted from University Physics Volume 2 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 2. Imported at revision db44eb9.