Question

if a circular coil of radius 2cm carries current of 5A then find magnetic field at its centre.​

Answer 1

Answer:

Radius of circular loop (r) = 2 cm or 0.02 m

Current (I) = 5 amp

We know that , The magnetic field at centre of circular loop is given by

\boxed{ \sf{B = \frac{ u_{o}I}{2r} }}B=2ruoI

Thus ,

B = {4π × (10)^(-7) × 5}/{2 × 2 × (10)^(-2)}

B = 5π × (10)^(-5)

B = 3.14 × 5 × (10)^(-5)

B = 15.70 × (10)^(-5) Tesla

Therefore ,

The magnetic field at its centre of loop is 15.70 × (10)^(-5) Tesla

Answer 2

Answer:

hope it helps

Explanation:

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