Question 287: Electromagnetic Induction

Question

The self inductance '$$L$$' of a solenoid of length '$$l$$' and area of cross-section '$$\mathrm{A}$$', with a fixed number of turns '$$\mathrm{N}$$' increases as

Accepted Answer

The equation for self-inductance is:
$$\mathrm{L}=\frac{\mu_0 \mathrm{~N}^2 \mathrm{~A}}{l}$$
$$	herefore \quad$$ The self-inductance $$\mathrm{L}$$ of a solenoid of length $$l$$ and area of cross section '$$A$$', with a fixed number of turns '$$\mathrm{N}$$' increases as $$l$$ decreases and A increases.

Answer

both $$l$$ and $$A$$ increase

Answer

$$l$$ decreases and $$\mathrm{A}$$ increases

Answer

$$l$$ increases and A decreases

Answer

both $$l$$ and A decrease

Electromagnetic Induction

The self inductance '$L' of a solenoid of length 'l' and area of cross-section '\mathrm{A}', with a fixed number of turns '\mathrm{N}$' increases as

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