Interactive practice questions
Use the fact that $1$1 kWh = $3.6\times10^6$3.6×106 J to calculate how many joules $4$4 kWh is equal to.
Express your answer as a basic numeral.
Easy
1min
Use the fact that $1$1 kWh = $3.6\times10^6$3.6×106 J to calculate how many joules $104.23$104.23 kWh is equal to.
Easy
1min
Energy consumption can be measured in joules (J). If we want to determine how much energy an appliance consumes in a day, all we need is the power the appliance uses in watts (W) and how long the appliance is used for (in seconds). The formula for calculating this is:
$\text{Energy Consumed}$Energy Consumed$=$=$\text{Power }$Power $\times$×$\text{Time }$Time
Easy
2min
An appliance consumes energy at a rate of $1200$1200 watts. How many joules of energy does it use if it runs for $29$29 seconds?
Easy
1min
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