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MHT CET 2026 (11 Apr, Shift 2) · Magnetic Field of Straight Wires

Magnetic Field of Straight Wires question from MHT CET 2026 (11 Apr, Shift 2)

Q6MHT CET 2026 · 11 APR · SHIFT 2Easy

Magnetic Field of Straight Wires

Two parallel wires of equal lengths are separated by a distance of $3$ m from each other. The currents flowing through first and second wire is $3$ A and $4.5$ A respectively in opposite directions. The resultant magnetic field at mid point of both the wires is ( $\mu_0$ =permeability of free space)

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Answer: (b)

Opposite currents: fields at the midpoint add.
$B = \frac{\mu_0 (3 + 4.5)}{2\pi \times 1.5} = \frac{5\mu_0}{2\pi}$
So the answer is (b) $\frac{5\mu_0}{2\pi}$ .

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