CUET · PHYSICS · PYQ PAPER 2023
A circular conducting loop is placed in a uniform magnetic field with its plane perpendicular to the field. An emf is induced in the loop if:
A. it is displaced in the same plane in magnetic field
B. it is rotated about its axis
C. it is rotated about a diameter
D. it is converted into square loop in the same plane:
Choose the correct answer from the options given below:
- A A, B and C
- B C and D
- C B and D
- D A, C and D
Answer & Solution
Correct Answer
(B) C and D
Step-by-step Solution
Detailed explanation
An emf is induced only when the magnetic flux ( \(\Phi=B A \cos \theta\) ) changes. Rotating the loop about its diameter (C) changes the angle \(\theta\), and changing its shape to a square (D) changes the area \(A\), both resulting in a change in flux. B) C and D
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