Question

How much energy does a $150W$ steam iron consume per second?

Answer 1

Step 1: Given Data

From the question, it is given that,

$P=150W$ and

$t=1s$

Step 2: Formula used

Power is defined as the amount of work done per unit of time.

If $P$ is the power, $W$ is the work done and $t$ is the total time taken, then

$P=\frac{W}{t}$

$\therefore W=Pt$

Step 3: Calculation of energy

$\therefore W=150\times 1$

$=150J$

Hence, the steam iron consumes $150J$ per second.