-57 0 In Fig. 30-63, R= 15 N, L = 5.0 H, the ideal battery has & = 10 V, and the fuse in the upper branch is an ideal 3.0 A fuse. It has Fuse R zero resistance as long as the cur- rent through it remains less than 3.0 L. A. If the current reaches 3.0 A, the lelll fuse “blows" and thereafter has in- finite resistance. Switch S is closed Fig. 30-63 Problem 57. at time t= 0. (a) When does the fuse blow? (Hint: Equation 30-41 does not apply. Rethink Eq. 30-39.) (b) Sketch a graph of the current i through the inductor as a function of time. Mark the time at which the fuse blows.

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Chapter1: Units, Trigonometry. And Vectors
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•57 G0 In Fig. 30-63, R = 15 N,
L = 5.0 H, the ideal battery has % =
10 V, and the fuse in the upper
branch is an ideal 3.0 A fuse. It has
Fuse
R
zero resistance as long as the cur-
rent through it remains less than 3.0
3.
L.
A. If the current reaches 3.0 A, the
fuse “blows" and thereafter has in-
finite resistance. Switch S is closed Fig. 30-63 Problem 57.
at time t= 0. (a) When does the
fuse blow? (Hint: Equation 30-41 does not apply. Rethink Eq.
30-39.) (b) Sketch a graph of the current i through the inductor as a
function of time. Mark the time at which the fuse blows.
Transcribed Image Text:•57 G0 In Fig. 30-63, R = 15 N, L = 5.0 H, the ideal battery has % = 10 V, and the fuse in the upper branch is an ideal 3.0 A fuse. It has Fuse R zero resistance as long as the cur- rent through it remains less than 3.0 3. L. A. If the current reaches 3.0 A, the fuse “blows" and thereafter has in- finite resistance. Switch S is closed Fig. 30-63 Problem 57. at time t= 0. (a) When does the fuse blow? (Hint: Equation 30-41 does not apply. Rethink Eq. 30-39.) (b) Sketch a graph of the current i through the inductor as a function of time. Mark the time at which the fuse blows.
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