railway RRB Technician Grade 1 Mock Test 2024 Physics Moving Charges and Magnetism Force Between Two Parallel Currents
The force between two parallel current carrying conductors placed at a x distance apart and carrying same current I is:
1
\(\rm \frac{2\times 10^{-7}I^2}{\pi x} \frac{N}{m}\)
2
\(\rm \frac{2\times 10^{-7}I^2}{ x} \frac{N}{m}\)
3
\(\rm \frac{4 \pi \times 10^{-7}I^2}{x} \frac{N}{m}\)
4
\(\rm \frac{2\pi \times 10^{-7}I^2}{x} \frac{N}{m}\)