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Practice MCAT Question - Q48 - Answer!

Which derived unit below is equivalent to the SI unit for magnetic field strength, the tesla, T?

A.  Nm/A
B.  NA/m
C.  N/Am
D.  Am/N

The correct answer is (C). Solve F = qvB for B and substitute the units:

B = F/qv = N/Cm/s = N/(C/s)m = N/Am

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