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MHT CET202122 Sep 2021Evening ShiftPhysicsMagnetic Effects of CurrentActual

The magnetic field inside a current carrying toroidal solenoid is 0.2 mT . What is the magnetic field inside the toroid if the current

Options

  1. A0.02 mT
  2. B0.6 mT
  3. C0.8 mT
  4. D0.9 mT

Correct answer

B. 0.6 mT

Step-by-step solution

Magnetic field inside the toroid is given by aligned & B = ₀ nI & B ₂ ~B ₁ = I ₂ I ₁ =3 aligned (If cross-sectional radius of the solenoid is changed three will be no effect on the magnetic field, assuming the number of turns remains same.) B ₂=3 ~B ₁=3 0.2=0.6 ~T

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