Two wires carrying current 5 ~A and 2 ~A are enclosed in a circular loop as shown in the figure. Another wire carrying a current of 3 ~A is situated outside the loop. The value of f B dl around the loop is ( ₀= permeability of free space, d

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Two wires carrying current 5 ~A and 2 ~A are enclosed in a circular loop as shown in the figure. Another wire carrying a current of 3 ~A is situated outside the loop. The value of f B dl around the loop is ( ₀= permeability of free space, dl is the length of the Amperion loop)

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Correct answer: C. 3 ₀

Current of 5A and 2A are enclosed in the loop and are in opposite direction. Hence, net current enclosed by the loop is 3 ~A . According to Ampere law, B d l = ₀ I =3 ₀

Two wires carrying current 5 ~A and 2 ~A are enclosed in a circular loop as shown in the figure. Another wire carrying a current of 3 ~A is situated outside the loop. The value of f B dl around the loop is ( ₀= permeability of free space, dl is the length of the Amperion loop)

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