The unit of ∆Φ/∆t can be written as?
Correct answer: C. NmA-1s-1
- A. NmA-2s-1
- B. NmAs-1
- C. NmA-1s-1
- D. NmA-2s1
Explanation
The unit of magnetic flux change (∆Φ) is measured in webers (Wb), and the unit of time change (∆t) is measured in seconds. So, ∆Φ/∆t = Wb/s As we know that: Wb = Nm/A Puting this value into the formula: ∆Φ/∆t = Nm/As = NmA-1s-1
This question appeared on the UHS MDCAT 2022 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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