The passport of the electric iron says “220V, 600W”. How much heat is released in the iron for 2
| August 17, 2021 | education
The passport of the electric iron says “220V, 600W”. How much heat is released in the iron for 2 hours of operation at a voltage of 220V
As you know, the more powerful the iron, and the longer it works, the more heat is generated in the iron. Next, let’s write down the formulas.
The operation of the electrical device A and the heat Q released during operation in this case are equal. A = Q.
Power P = 600 W. Voltage U = 220 V. (We equate the work of electric current with the amount of heat, A = Q.
The power of the device is work per unit of time, or P = A / t = Q / t.t – time, t = 2 hours. Then the amount of heat is equal to:
A = Q = P * t = 600 W * 2 hours = 600 W * 2 * 3600s = 4,320,000 J = 4.32 * 10 ^ 6 J.
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