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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 :

1. (1) A, B, C, D only
2. (2) A, C, D, E only
3. (3) A, B, C, E only
4. (4) B, C, D, E only

Correct answer: (2) A, C, D, E only

Solution

The correct option includes statements that accurately describe self-inductance: it is influenced by the coil's geometry (A), self-induced e.m.f. indeed opposes changes in current (C), self-inductance serves as an electromagnetic analogue to mass (D), and establishing current requires work against self-induced e.m.f. (E). However, it is incorrect to state that self-inductance does not depend on the medium's permeability, which is why option B is excluded.

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