Two infinitely long parallel wires 5 cm apart in air carry currents of 2A and 4A respectively. Find the magnitude of the force on each metre of wire if currents are (i) in the same direction (ii) in opposite direction.
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The magnetic field produced by a long straight wire carrying a current I at a distance r from the wire is given by the formula: B = (μ₀ * I) / (2 * π * r) where μ₀ is the permeability of free space (μ₀ = 4π × 10^(-7) Tm/A). Show more…
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