The current produced due to induced emf depends upon
Correct answer: D. Strength of magnetic field in which coil rotates
- A. Area of the coil:
- B. Shape of the coil
- C. Turns of coil:
- D. Strength of magnetic field in which coil rotates
Explanation
According to Faraday's law of electromagnetic induction, the magnitude of the induced electromotive force (emf) and hence the current produced in a coil depends on the rate of change of magnetic flux through the coil. This rate of change of magnetic flux depends on factors such as the strength of the magnetic field, the area of the coil, and the rate of rotation or change in orientation of the coil with respect to the magnetic field.
This question appeared on the ETEA MDCAT 2010 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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