Two circular loops are placed coaxially but separated by a distance. A battery is suddenly connected to one of the loops establishing a current in it. Will there be a current induced in the other loop? If yes, when does the current start and when does it end? Do the loops attract each other or do they repel?
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A battery is suddenly connected to one of the loops establishing a current in it. Will there be a current induced in the other loop?
yes
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Explanation:
- Consider loops A and B which are coaxially mounted as shown above. Once the battery is attached to it, let the current direction in loop A be clockwise. As seen from B side, the way of the magnetic area because of the current will be towards the west, due to the right-hand Law of the screw.
- A current is produced in it because of a sudden flux via the loop B. It will be caused only for a moment when the current unexpectedly leaps to a constant value from zero.
- There will be no induced current after it's hit a constant value. Now, under the rule of Lenz, The triggered current place in circuit B will be such that it will resist the magnetic field because of loop A.
- In loop B, therefore, a current is produced in the anti-clockwise direction. The caused current flows in loop B as soon as the current rises in loop A and stops when the current is zero by loop A Because the currents in the loops are in opposite directions, they should repel each other.
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