JEE Main 2022 Physics question

Two parallel, long wires are kept 0.20 m apart in vacuum, each carrying current of x A in the same direction. If the force of attraction per meter of each wire is N, then the value of x is approximately:

(1)1
(2)2.4
(3)1.4Correct
(4)2

Answer: (3)

Solution

The force per unit length is \elli_{1}i_{2}$/(2π d) = 2 ×

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Question ID VK-034818