Question:

A current i ampere flows in a circular arc of wire whose radius is R, which subtend an angle 3π/2 radian at its centre. The magnetic induction B at the centre is

q2

Options :

  • (a) μ0ί/R
  • (b) μ0ί/2R
  • (c) 2μ0ί/R
  • (d) 3μ0ί/8R

Answer :

(d) 3μ0ί/8R

Answer Steps :

step 1:

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