Electromagnetic Induction and Alternating Current 1 Question 12
####12. In a straight conducting wire, a constant current is flowing from left to right due to a source of emf. When the source is switched off, the direction of the induced current in the wire will be……
(1993, 1M)
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Answer:
Correct Answer: 12. Left to right or zero
Solution:
- When source is switched-off, left to right current decreases to zero. Therefore, from Lenz’s law, induced current will oppose the change i.e. it will be from left to right if there is some inductance in the circuit, otherwise it will be zero.
