MHT CET 2026 Physics question
Two parallel wires of equal lengths are separated by a distance of 3m from each other. The currents flowing through first and second wire is 3A and 4.5A respectively in opposite directions. The resultant magnetic field at mid point of both the wires is ( =permeability of free space)
Answer: (B)
Solution
The midpoint is at m from each wire. For antiparallel currents, the fields of the two wires at a point between them point in the same direction, so they add. and $ =
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