Question

If a straight wire carrying a current $i_1$ amp runs along the axis of a circular current carrying loop having current $i_2$ amp, then the force of interaction between the two current carrying conductors is

• A. Zero
• B. Infinity
• C. $\frac{2i_1{i}_2}{r}N{m}^{-1}$
• D. $\frac{{\mu }_0}{4\pi }\frac{2i_1{i}_2}{r}N{m}^{-1}$

Answer 1

The correct option is A Zero

The straight current carrying is placed parallel to magnetic field produced by circular current carrying loop.
Hence, force on the wire, $F=0$.