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duoheer
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An electric iron marked 1000W, 240V is wrongly connected to a 120V mains.What is the power dissipated by the iron? thanx
What is the power dissipated by the iron?
- Thread starter duoheer
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- Iron Power Power dissipated
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SUMMARY
The power dissipated by an electric iron rated at 1000W and 240V when connected to a 120V mains supply is calculated using the formula P = V^2 / R. Given that the resistance R can be derived from the rated power and voltage (R = V^2 / P), the resistance of the iron is 57.6 ohms. When connected to 120V, the power dissipated is 25W, significantly lower than its rated power due to the reduced voltage.
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- Basic knowledge of electrical power calculations
- Familiarity with resistive loads
- Concept of voltage ratings in electrical appliances
- Study the relationship between voltage, current, and resistance using Ohm's Law
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- Explore the effects of voltage mismatches on electrical appliances
- Investigate safety measures for using appliances with incorrect voltage ratings
Electrical engineers, technicians, and anyone involved in appliance design or troubleshooting electrical devices.
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