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Physics Question on Magnetic Field

A charged particle moving with veiocity 4×106ms−14 \times 10^6ms^{-1} enters perpendicuiar to a magnetic field B=2 Wbm−2.B=2 \, Wbm^{-2}. It moves in a circular path of radius 2 cm, then charge per unit mass is

A

102C kg−110^2C \, kg^{-1}

B

103C kg−110^3C \, kg^{-1}

C

104C kg−110^4C \, kg^{-1}

D

108C kg−110^8C \, kg^{-1}

Answer

108C kg−110^8C \, kg^{-1}

Explanation

Solution

Answer (d) 108C kg−110^8C \, kg^{-1}