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Two long parallel wires, each carrying a current of 12 A, lie at a distance of...

Two long parallel wires, each carrying a current of 12 A, lie at a distance of 4 cm from each other. What is the magnetic force per unit length exerted by one wire on the other? The magnetic force per unit length exerted by one wire on the other is ×10-4 N/m

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Answer #1

given :

current = i = 12 A

distance = d = 4cm = 0.04 m

suppose the length of the wires is L.

Magnetic field due to current carrying long straight wire is [ d = distance of point where filed is calculated]

Magnetic force on current carrying straight wire is F = iLB.

therefore,

magnetic force per unit length = F/L = iB =

Magnetic force per unit length on the wire is [answer]

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