In fleming's right hand rule, the second finger indicates:
Correct answer: B. Induced current
- A. Force
- B. Induced current
- C. Magnetic field
- D. Motion
Explanation
Lenz's law states that the direction of the induced current in a circuit is such that it opposes the change in magnetic flux, which is a practical application of the conservation of energy.
This question appeared on the NUMS 2023 paper, which you can sit online with every answer explained.
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About Faraday's Law
Faraday's law states that an induced electromotive force equals the rate of change of magnetic flux linkage through a circuit. Questions cover changing field, area, angle or motion, the negative sign associated with Lenz's law, and the distinction between induced emf and the current that may flow in a closed circuit.
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