Pick out the expression for magnetic field inside a toroid from the f – McqOptions

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1.	Pick out the expression for magnetic field inside a toroid from the following.
A.	B = μ0 NI
B.	B = 2μ0 NI
C.	B = \(\frac {\mu_o}{NI}\)
D.	B = \(\frac {\mu_o N}{I}\)
Answer» B. B = 2μ0 NI

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