MHT CET 2025 Physics question
Two long parallel wires carrying currents 4A and 3A in opposite directions are placed at 5cm from each other. A point P is at equidistant from both the wires such that the line joining the point P to the wires are perpendicular to each other. The magnitude of magnetic field at point p is
( = permeability of free space = SI unit)
Answer: (D)
Solution
The lines joining P to the two wires are perpendicular and equal in length, so P lies on a right-angled isosceles triangle whose hypotenuse is the 5 cm separation. Distance of P from each wire: m. Field of each wire :
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