Question

How do you calculate kWh, watts and joules?

Answer 1

Joules=F*d, watts= J/s, Kwh= kw*h(time)

Step-by-step explanation:

First, we need to know... what are we measuring with the different units:

Joules: This unit is used to measure energy and work.

`EnerKinec=(1)/(2) * m[kg]*v^(2) [m^(2)/s^(2)  ]\\\\Enpot=m[kg]*g[m/s^(2)]*h[m]\\ \\Work=F[N]*d[m]`

Watts: This unit is used to measure power, and is related to energy and work when we use the time. That is, power equals work or energy per unit of time.

`Power = (work[J])/(time[s]) = [watts]`

KWh: This unit is used to measure the amount of power consumed, it is very common to see it on electric energy bills.

`Powerconsumed=Power*hoursworked\\\\Powerconsumed= power[kw]*hoursworked[hr]=[Kw-h]`