A homemade electric soldering iron with a current of 500 mA has a power of 60 watts.
| March 20, 2021 | education
A homemade electric soldering iron with a current of 500 mA has a power of 60 watts. What voltage is the soldering iron designed for?
The power of an electric soldering iron is calculated by the formula:
P = U * I, where P is the power of the electric soldering iron (P = 60 W), U is the voltage (V), I is the current in the electric soldering iron (I = 500 mA = 0.5 A).
Let us express and calculate the voltage:
U = P / I = 60 / 0.5 = 120 V.
Answer: A homemade soldering iron is designed for a voltage of 120 V.
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