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Question

Consider a tightly wound 100 turn coil of radius 10 cm, carrying a current of 1A. What will be the magnitude of the magnetic field at the centre of the coil ?

  1. 6.28 × 10–4 T
  2. 6.28 × 10–3 T
  3. 2.68 × 10–4 T
  4. 6.82 × 10–2 T

Answer:

Option A: 6.28 × 10–4 T

Detailed Solution:

The correct answer is “6.28 × 10–4 T”.

Correct Answer: 6.28 × 10⁻⁴ T