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Question: 

At t = 0, the current through a 45.0-mH inductor is 50.0 mA and is increasing at the rate of 115 mA/s. What is the initial energy stored in the inductor, and how long does it take for the energy to increase by a factor of 5.0 from the initial value?

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 
  1. $5.63 \times 10^{-5} \textrm{ J}$
  2. $0.537 \textrm{ s}$

Giancoli 7th Edition, Chapter 21, Problem 48

(1:46)

Chapter 21, Problem 48 is solved.

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