Question

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

• A. $\infty$
• B. Zero
• C.
• D. $\frac { 2 i _ { 1 } i _ { 2 } } { r } N / m$

Answer 1

Answer: (B)

Zero

Answer 2

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