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Questions  

A straight wire carrying a current i1 amperes runs along the axis of a circular coil carrying  current i2 amperes. Then the force of interaction between the two current carrying conductors is

a
b
Zero
c
μ04π  2i1i2r N/m
d
2i1i2r N/m

detailed solution

Correct option is B

As shown in the following figure, straight wire is placed parallel to the magnetic field produced by circular current. Hence, force on wire F = 0.

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Similar Questions

Two infinitely current carrying insulated wires AB and CD are carrying same current  I. The wires cross each other at right angles as shown in figure. Three identical conductors P1Q1 , P2Q2 and P3Q3, carrying same current are placed a shown in figure and the forces acting on them are F1 , F2 and F3 respectively. Then select the correct option.


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