An electric iron is rated $220 V, 1 K W$ . Under normal working conditions, find the amount of heat that will produced in $5$ minutes.

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Solution

Step 1: Given data:
The voltage of electric iron $= 220 V$
Power of electric iron $= 1 K W$
Time $= 5 m i n .$
Step 2: Calculation of heat produced:
As we know,
The amount of heat produced can be determined by using formula:
$H e a t p r o d u c e d = P \times t$ ,
Where $P i s t h e P o w e r, t i s t h e t i m e$
So, for determining the value of heat produced we will put the value of power and time in above expression.
Thus, the amount of heat produced will be $= 1000 \times 5 \times 60 = 300000 J$
Therefore, the amount of heat that will produced in $5$ minutes is $300000 J$ .

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