Question 274: 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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