NCERT 4.7 - Moving Charges and Magnetism
Question: Two long parallel wires are held in the air. The separation between the wires is 1.0 m and a current of 1 A flows through each in the same direction. Find the magnetic force per unit length between the wires.
Answer: 2.0 × 10⁻⁷ N/m (Attractive)
Full step-by-step NCERT solution with diagrams on Something by Zero.