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Chrome File Edit View History Bookmarks People Window Help T 41% D Tue 2:53 PM a E Mastering Physics: Chapter 30 Homework https:// session.masteringphysics.com/ myct/itemView?offse next&assignmentProblemID; 16862 MIPABRAHAM 25242016S Signed in as Tanner Calloway Help Close Chapter 30 Homework Exercise 30.12 previous l 5 of 7 l next Exercise 30.12 Part A The inductor shown in the figure (Figure 1) has The potential between points a and b is Vab 1.04 V, with point a at higher potential s the current increasing or decreasing? inductance 0.260 H and carries a current in the direction shown. The current is changing at a constant rate O increasing O decreasing Submit My Answers Give Up Part B of 1 Figure 1 If the current at t 0 is 12.0A, what is the current at t 2.00 s? Submit My Answers Give Up Continue Provide Feedback

Explanation / Answer

Part A) current is increasing

Part B) induce emf e = Ldi/dt = 1.04

=> di/dt = 1.04/0.260 = 4

=> current i = 4t + c

at t= 0 , i = 12 => c= 12

so i = 4t + 12

at t = 2 sec

i = 8+12 = 20 A

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