MHT CET20239 May 2023Evening ShiftPhysicsCurrent ElectricityActual
10 A current is flowing in two straight parallel wires in the same direction. Force of attraction between them is 1 10⁻³ ~N . If the current is doubled in both the wires the force will be
Options
- A1 10⁻³ ~N
- B2 10⁻³ ~N
- C4 10⁻³ ~N
- D0.25 10⁻³ ~N
Correct answer
C. 4 10⁻³ ~N
Step-by-step solution
F = ₀ 4 2 I ₁ I ₂ r l=10⁻³ ~N When current in both the wires is doubled, then F ^ = ₀ 4 2 (2 I ₁ 2 I ₂ ) r j=4 10⁻³ ~N