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Magnetic Effects & Magnetism

JEE Main level, single correct, medium

94 of 276

Question 94 of 276

Currents of a 10 ampere and 2 ampere are passed through two parallel thin wires $A$ and $B$ respectively in opposite directions. Wire $A$ is infinitely long and the length of the wire $B$ is $2 \mathrm{~m}$ . The force acting on the conductor $B$ , which is situated at $10 \mathrm{~cm}$ distance from $A$ will be

Show answer and solution

Answer: (A) $8 \times 10^{-5} \mathrm{~N}$

Force acting on conductor

B

due to conductor

A

is given by relation

F=\frac{\mu_0 I_1 I_2 l}{2 \pi r}

l

-length of conductor

B

r

-distance between two conductors

\therefore F=\frac{4 \pi \times 10^{-7} \times 10 \times 2 \times 2}{2 \times \pi \times 0.1}=8 \times 10^{-5} \mathrm{~N}

JEE Main question paper PDF

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JEE Main 2025 Apr 2 Shift 1 question paper

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