Question

How do you calculate kWh, watts and joules?

Answer 1

Answer:

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

Explanation:

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

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

$EnerKinec=\frac{1}{2} * m[kg]*v^{2} [m^{2}/s^{2} ]\\\\Enpot=m[kg]*g[m/s^{2}]*h[m]\\ \\Work=F[N]*d[m]$

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.

$Power = \frac{work[J]}{time[s]} = [watts]$

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

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