Which expression gives the magnitude of the magnetic field at the centre of a…

PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

Which expression gives the magnitude of the magnetic field at the centre of a single-turn circular loop of radius

R

carrying current

I

? (a)

\dfrac{\mu_0 I}{R}

(b)

\dfrac{\mu_0 I}{2R}

(c)

\dfrac{\mu_0 I}{2\pi R}

(d)

\dfrac{\mu_0 I R}{2}