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Solution


Q.

The induced emf can be produced in a coil by                                 [2023]

A. moving the coil with uniform speed inside uniform magnetic field
B. moving the coil with non-uniform speed inside uniform magnetic field
C. rotating the coil inside the uniform magnetic field
D. changing the area of the coil inside the uniform magnetic field

Choose the correct answer from the options given below:
1 B and C only  
2 B and D only  
3 C and D only  
4 A and C only  

Ans.

(3)

Moving a coil inside a uniform magnetic field either with uniform or non-uniform speed doesn’t change flux, so no emf is induced.