Question

If it takes 270,000 Joules of energy to power a flat iron for 4.5 minutes, what is the maximum power of the flat iron?A) 60,000 WB) 1000 WC) 1200 WD) 2700 W

Answer 1

Given:

The energy given to the flat iron is,

`E=270000\text{ J}`

The time for the energy is

`\begin{gathered} t=4.5\text{ minutes} \\ =4.5*60\text{ s} \\ =270\text{ s} \end{gathered}`

To find:

The maximum power

Step-by-step explanation:

The power of the flat iron is,

`\begin{gathered} P=(E)/(t) \\ =(270000)/(270) \\ =1000\text{ W} \end{gathered}`

Hence, the required power of the iron is 1000 W.