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Q.

The SI unit of magnetic flux density is

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a

$kg m^{2} s^{- 2}$

b

${kgs}^{- 2} A^{- 1}$

c

${kg}^{- 1} m^{- 2} s^{3} A^{2}$

d

${JA}^{- 1} s^{- 1}$

answer is D.

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Detailed Solution

By definition, $F = q B v$ . Hence,

$Unit of B = \frac{Unit of force}{(Unit of charge) (Unit of velocity)} = \frac{{kgms}^{- 2}}{(As) ({ms}^{- 1})} = {kgs}^{- 2} A^{- 1}$

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