The power of the heating element of the soldering iron is 90 W and the resistance is 160 Ohm
| May 2, 2021 | education
The power of the heating element of the soldering iron is 90 W and the resistance is 160 Ohm, determine the voltage in the network of the soldering iron.
These tasks: P (power of the heating element) = 90 W; R (resistance of the soldering iron taken) = 160 ohms.
The voltage in the network to which the soldering iron is connected can be expressed from the formula: P = U^2 / R, whence U = √ (P * R).
Let’s calculate: U = √ (90 * 160) = 120 V.
Answer: The taken soldering iron is connected to a network with a voltage of 120 V.
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