jee-main 2013 Q20

jee-main · India · 22apr Not Maths

A current $i$ is flowing in a straight conductor of length $L$. The magnetic induction at a point on its axis at a distance $\frac{L}{4}$ from its centre will be:
(1) Zero
(2) $\frac{\mu_0 i}{2\pi L}$
(3) $\frac{\mu_0 i}{\sqrt{2}L}$
(4) $\frac{4\mu_0 i}{\sqrt{5}\pi L}$

A current $i$ is flowing in a straight conductor of length $L$. The magnetic induction at a point on its axis at a distance $\frac{L}{4}$ from its centre will be:\\
(1) Zero\\
(2) $\frac{\mu_0 i}{2\pi L}$\\
(3) $\frac{\mu_0 i}{\sqrt{2}L}$\\
(4) $\frac{4\mu_0 i}{\sqrt{5}\pi L}$

Paper Questions

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