Question

Asked Aug 4, 2019

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The current *i* through a 5.3 H inductor varies with time *t* as shown by the graph of the figure. The inductor has a resistance of 9.9 Ω. Find the magnitude of the induced emf ε during the time intervals **(a) ***t* = 0 to 2 ms; **(b)** 2 ms to 5 ms, and **(c)** 5 ms to 6 ms. (Ignore the behavior at the ends of the intervals.)

Step 1

Write the expression for the induced emf in a inductor.

Step 2

Change in current for a given time can be determined from the graph.

(a)For time 0 to 2ms , the change in current is 0 to 7 A.

Step 3

(b) For time 2 ms to 5ms , the c...

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