Given,
L = 0.5 m ; I1 = I2 = I = 0.25 A ; d = 11.5 cm
We know that force between two wires is given by:
F = u0 I1 I2 L/2 pi R
F = 4 x pi x 10^-7 x 0.25 x 0.25 x 0.5/2 x pi x 0.115 = 5.43 x 10^-8 N
Hence, F = 5.43 x 10^-8 N
The direction of current in the wires are not stated in the question, so direction of force can not be determined.
By convention
Wires with current in same direction attracts.
Wires with current in apposite direction repels
Two 0.50 m long wires are parallel and each carry a current of 0.25 Amps and...
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