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Solution


Q.

Regarding self-inductance:

A. The self-inductance of the coil depends on its geometry.

B. Self-inductance does not depend on the permeability of the medium.

C. Self-induced e.m.f. opposes any change in the current in a circuit.

D. Self-inductance is electromagnetic analogue of mass in mechanics.

E. Work needs to be done against self-induced e.m.f. in establishing the current.

Choose the correct answer from the options given below:          [2025]
1 A, B, C, D only  
2 A, C, D, E only  
3 A, B, C, E only  
4 B, C, D, E only  

Ans.

(2)

Self-inductance of coil

L=μ0μrN22πR