A pellet carrying charge of $0.5\, coulombs$ is accelerated through a potential of $2,000\, volts$. It attains a kinetic energy equal to
A$1000\, ergs$
B$1000\, joule$
C$1000\, kWh$
D$500\, ergs$
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B$1000\, joule$
b (b) Energy $ = 0.5 \times 2000 = 1000\,J$
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