A commonly used unit is the kilowatt hour. The physical quantity measured in kilowatt hour isMultiple Choice: A. current B. work (energy) C....

I will answer with mathematical analysis:Work done(W) = Force x distance (Units N-mt or Kg-mt) = = F*x

The rate of doing work is called Power.Mathematically the derivative of Work done is Power.ie dW/dt = d(F*x)/dt = F*v

Units = N-m/sec = 1 watt.THe capacity of doing work is called Emergy.hence it is time dependent. Physically Work done and energy are same.dW=P*dt

Emergy =Powerxtime =watt-sec or biger unit KWh. Therefore Answer is B.