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Questions  

A bullet of mass 2 gm is having a charge of 2μC. Through what potential difference must it be accelerated, starting from rest, to acquire a speed of 10m/s

a
5 kV
b
50 kV
c
5 V
d
50 V

detailed solution

Correct option is B

By using 12mv2=QV⇒12×2×10−6×(10)2=2×10−6V⇒V=50kV

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