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Karnataka Board PUCPUC Science Class 11

The Battery Discussed in the Previous Question is Suddenly Disconnected. is a Current Induced in the Other Loop? If Yes When Does It Start and When Does It End Do the Loops Attract Each Other Or Repel

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Question

The battery discussed in the previous question is suddenly disconnected. Is a current induced in the other loop? If yes, when does it start and when does it end? Do the loops attract each other or repel?

Short/Brief Note
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Solution

When the battery is suddenly disconnected, a current is induced in loop B due to a sudden change in the flux through it. It is only induced for a moment when the current suddenly falls to zero. There is no induced current after it has fallen to zero. According to Lenz's law, the induced current is such that it increases the decreasing magnetic field. So, if the current in loop A is in clockwise direction, the induced current in loop B will also be in clockwise direction. Hence, the two loops will attract each other.

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Chapter 38: Electromagnetic Induction - Short Answers [Page 303]

APPEARS IN

HC Verma Concepts of Physics Volume 1 and 2 [English]
Chapter 38 Electromagnetic Induction
Short Answers | Q 6 | Page 303

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