Question

The kinetic energy of an electron which is accelerated through a potential of 100 volts is

• A. $1.602\times {10}^{-17}J$
• B. 418.6 calories
• C. $1.16\times {10}^{4}J$
• D. $6.626\times {10}^{-34}W-sec$
  

Answer 1

The correct option is A

$1.602\times {10}^{-17}J$

Kinetic Energy = Work done = Q x V = $1.6\times {10}^{-19}\times 100=1.6\times {10}^{-17}$ Joules