JEE Main & Advanced
Physics
Electrostatics & Capacitance
Question Bank
Electric Field and Potential
question_answer
A particle has a mass 400 times than that of the electron and charge is double than that of a electron. It is accelerated by 5V of potential difference. Initially the particle was at rest, then its final kinetic energy will be [MP PMT 1990; DPMT 1999]
A) 5 eV
B) 10 eV
C) 100 eV
D) 2000 eV
Correct Answer:
B
Solution :
\[\Delta E=2e\times 5V=10eV\]Þ Final kinetic energy \[=10eV\]