COMEDK2020PhysicsMagnetic Effects of Current
A horizontal overhead power line carries a current of 90 ~A in East to West direction. What is the magnitude and direction of the magnetic field due to the current, 1.5 ~m below the line?
Options
- A1.2 10⁻⁵ ~T , towards South
- B1.2 10⁻⁵ ~T , towards North
- C1.2 10⁻⁵ ~T , towards East
- D1.2 10⁻⁵ ~T , towards West
Correct answer
A. 1.2 10⁻⁵ ~T , towards South
Step-by-step solution
The given situation is shuwn below Magnetic fiekl at point P_ , aligned B &= ₀ 9 x , l r &=2 10⁻⁷ 90 1.5 &=1.2 10⁻⁶ ~T ( Sonth ) aligned