Question

Two long parallel wires are carrying currents 5A and 12A respectively. If the force

per unit length between these wires is 3x10-5 Nm-1

, the distance between them should be​

Answer 1

Answer:

answer in attachment

Answer 2

The wire should be at a distance of 0.4m

Explanation:

• Two long parallel wires are carrying currents 5A and 12A respectively.
• If the force per unit length between these wires is 3x10-5 Nm-1
• the distance between them should be​

F= υ i₁ i₂ l ÷ 2πr

here,

l = 1

3 × 10⁻⁵ = 4π × 10⁻¹ × 5 × 12 ÷ 2πr

r= 2 × 10⁻⁷×5×12 ÷ 3×10⁻⁵

r= 4×10⁻¹

r= 0.4m