A toroid has number of turns per unit length n, current i, then the ma – McqOptions

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1.	A toroid has number of turns per unit length n, current i, then the magnetic field is [RPET 2000]
A.	\[{{\mu }_{0}}ni\]
B.	\[{{\mu }_{0}}{{n}^{2}}i\]
C.	\[{{\mu }_{0}}i/n\]
D.	None of these
Answer» B. \[{{\mu }_{0}}{{n}^{2}}i\]

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