Question

Three long straight wires carrying current are arranged mutually parallel as shown in the figure. The force experienced by \(15\) cm length of wire \(Q\) is ________. (\( \mu_0 = 4\pi \times 10^{-7}\,\text{T m A}^{-1} \)) 

• A. \(6\times10^{-7}\,\text{N}\) towards \(P\)
• B. \(6\times10^{-6}\,\text{N}\) towards \(P\)
• C. \(6\times10^{-7}\,\text{N}\) towards \(R\)
• D. \(6\times10^{-6}\,\text{N}\) towards \(R\)

Hint:

Always determine attraction or repulsion first using current directions before applying the force formula.

Answer 1

The Correct Option is C