A 750 watt hairdryer is used for 60 seconds. how many joules of energy are used?
We know, Power = Energy / time
Here, P = 750 Watt
t = 60 sec
Substitute their values,
750 = E / 60
E = 750 * 60
E = 45,000 J
In short, Your Answer would be 45,000 Joules
Hope this helps!
According to the question,
Power,
Time,
We know that,
→ \(Power = \frac{Energy}{Time}\)
By putting the given values,
\(750 = \frac{E}{60}\)
By applying cross-multiplication, we get
\(E = 750\times 60\)
\(= 45000 \ J\)
Thus the above approach is right.
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