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AIIMS 2012
Exam
AIIMS
Year
2012
Subject
Physics
Chapter
Magnetic Effects of Current

AIIMS 2012 · Physics · Magnetic Effects of Current

A toroid with mean radius r_0 , diameter 2 a have N turns carrying...

A toroid with mean radius r0r_0, diameter 2a2 a have NN turns carrying current II. What is the magnetic field BB inside the toroid?

Options

  1. ANI2πr0\frac{N I}{2 \pi r_0}
  2. B\frac{N I}{2 \pi\left(r_0+a\right)}
  3. C\frac{N I}{\pi\left(r_0+a\right)}
  4. Dzero

Correct answer

D. zero

Step-by-step solution

: The magnetic field at any point inside the toroid is zero
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