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Physics · 2026 · 4 marks
NEET 2026 · 21 June · Code 50 · Q5
Consider a long solenoid of length l and radius r. If n is the number of turns per unit length and μ 0 is the permeability of free space, the…
Consider a long solenoid of length $\displaystyle l$ and radius r . If n is the number of turns per unit length and $\displaystyle \mu_0$ is the permeability of free space, the inductance of the solenoid is :
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle \mu_0 \pi \mathrm{n}^2 \mathrm{r}^2 l$
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NEET (UG) 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.