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  • In the circuit shown, the cell is ideal. The coil has an inductance of 4 H and zero resistance. F is a fuse of zero resistance and will blow when the current through it reaches 5 A. The switch is c

In the circuit shown, the cell is ideal. The coil has an inductance of 4 H and zero resistance. F is a fuse of zero resistance and will blow when the current through it reaches 5 A. The switch is closed at t = 0. The fuse will blow

Option: 1

almost at once 


Option: 2

after 2 s


Option: 3

5 s


Option: 4

after 10 s


Answers (1)

best_answer

\mathrm{\varepsilon=\mathrm{L} \frac{\mathrm{di}}{\mathrm{dt}}}

\mathrm{or \; \mathrm{di}=\left(\frac{\varepsilon}{\mathrm{L}}\right) \mathrm{dt}}

\mathrm{or\; \mathrm{i}=\left(\frac{2}{4}\right) \mathrm{t}=0.5 \mathrm{t}\; For\; i=5 A, t=10 s.}

Posted by

Rishabh

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