jee-main 2002 Q52

jee-main · India Not Maths

If in a circular coil $A$ of radius $R$, current $I$ is flowing and in another coil $B$ of radius $2R$ a current $2I$ is flowing, then the ratio of the magnetic fields $\mathrm{B}_A$ and $\mathrm{B}_B$, produced by them will be
(1) 1
(2) 2
(3) $1/2$
(4) 4

If in a circular coil $A$ of radius $R$, current $I$ is flowing and in another coil $B$ of radius $2R$ a current $2I$ is flowing, then the ratio of the magnetic fields $\mathrm{B}_A$ and $\mathrm{B}_B$, produced by them will be\\
(1) 1\\
(2) 2\\
(3) $1/2$\\
(4) 4

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