CUET · PHYSICS · PYQ PAPER 2025
In which of the following cases emf would be induced-
- A When a coil and a magnet move with the same velocity in the same direction.
- B When a magnet is rotated about its own axis.
- C Whenever the magnetic flux linked with a circuit changes even if the circuit is open.
- D When a closed loop moves totally inside a uniform magnetic field.
Answer & Solution
Correct Answer
(C) Whenever the magnetic flux linked with a circuit changes even if the circuit is open.
Step-by-step Solution
Detailed explanation
According to Faraday's Law, an electromotive force (emf) is induced whenever there is a change in magnetic flux over time ( \(e=-d \Phi / d t\) ). This induction occurs regardless of whether the circuit is closed or open; however, current will only flow if the circuit is closed.…
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