A, B and C are parallel conductors of equal length carrying currents I, I and 2I, respectively. Distance between A and B is x. Distance between B and C is also x. F1 is the force exerted by B on A and F2 is the force exerted by C on A. Choose the correct option.
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a
F1 = 2F2
b
F2 = 2F1
c
F1 = F2
d
F1 =−F2
answer is D.
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Detailed Solution
F=μ04π = 2I1 I2a× lF1=μ04π = 2I2x× l AttractionF2=μ04π × 2× I × 2I2x× l = μ04π × 2I2x RepulsionThus F1=−F2