MHT CET20243 May 2024Morning ShiftPhysicsMagnetic Effects of CurrentActual
A current of 5 A flows through a toroid having a core of mean radius 20 cm . If 4000 turns of the conducting wire are wound on the core, then the magnetic field inside the core of the toroid is [permeability of free space =4 10⁻⁷ SI units]
Options
- A8 10⁻² ~Wb / m ^2
- B6 10⁻² ~Wb / m ^2
- C5 10⁻² ~Wb / m ^2
- D2 10⁻² ~Wb / m ^2
Correct answer
D. 2 10⁻² ~Wb / m ^2
Step-by-step solution
aligned B & = ₀ nI 2 r = 4 10⁻⁷ 4000 5 2 (20 10⁻² ) = 1 50 & =2 10⁻² wb / m ^2 aligned