CUET · PHYSICS · PYQ PAPER 2023
Which of the following statements are correct?
A. The relative motion between a magnet and a coil is responsible for induction of electric current in the coil.
B. Magnetic flux is a vector quantity.
C . In a closed coil, the magnitude of emf induced is equal to the time rate of change of magnetic flux.
D. Eddy currents oppose the magnetic braking effect in trains.
E. Lenz's law gives the polarity of the induced emf clearly.
Choose the correct answer from the options given below:
- A B, C and D only
- B A, B, D and E only
- C A, B and D only
- D A, C and E only
Answer & Solution
Correct Answer
(D) A, C and E only
Step-by-step Solution
Detailed explanation
Statements A, C, and E accurately describe the fundamentals of electromagnetism: induction requires relative motion, its magnitude depends on the rate of flux change (Faraday's Law), and its direction is determined by Lenz’s Law. Statement B is incorrect because flux is a…
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