A straight conductor carrying a current I is split into a circular loop of radius r as shown in the figure. The magnetic field at the centre O of the circle, in tesla, is-
A. \(\frac {{ µ }_{0}I}{ 2r }\)
B. \(\frac {{ µ }_{0}I}{ 2πr }\)
C. \(\frac {{ µ }_{0}I}{ πr }\)
D. zero
Answer:D
A straight conductor carrying a current I is split into a circular loop of radius r as shown in the figure. The magnetic field at the centre O of the circle, in tesla, is-
A. \(\frac {{ µ }_{0}I}{ 2r }\) B. \(\frac {{ µ }_{0}I}{ 2πr }\) C. \(\frac {{ µ }_{0}I}{ πr }\) D. zero