AP EAMCET20228 Jul 2022Morning ShiftPhysicsMagnetic Effects of CurrentActual
A closely wound solenoid of length 1 ~m has 5 layers of 500 turns each. If the magnitude of magnetic field inside the solenoid near its centre is 4.4 mT , the current carried is
Options
- A1.4 ~A
- B1.5 ~A
- C1.6 ~A
- D1.8 ~A
Correct answer
A. 1.4 ~A
Step-by-step solution
We have aligned & B = ₀ nI & 4.4 10⁻³= ₀ N 1 I & 4.4 10⁻³=4 10⁻⁷ 2500 1 I & [ N =500 5=2500] aligned I =1.4 ~A