1.How much energy does a 100-W electric bulb consume in two hours? 2.A stove element draws 15 A when connected to a 240-V line. How long does it take to consume 60 kJ? 3. The resistance of a copper wire at 30°C is 50 ohms. If the temperature coefficient of a copper at 0°C is 0.00427, What is the resistance at 100°C?

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1.How much energy does a 100-W electric bulb consume in two hours?
2.A stove element draws 15 A when connected to a 240-V line. How long does it take to
consume 60 kJ?
3. The resistance of a copper wire at 30°C is 50 ohms. If the temperature coefficient of a
copper at 0°C is 0.00427, What is the resistance at 100°C?
4.The resistance of a wire is 126.48 ohms at 100°C and 100 ohms at 30°C. Determine the
temperature coefficient of copper at 0DC. .004270
Transcribed Image Text:1.How much energy does a 100-W electric bulb consume in two hours? 2.A stove element draws 15 A when connected to a 240-V line. How long does it take to consume 60 kJ? 3. The resistance of a copper wire at 30°C is 50 ohms. If the temperature coefficient of a copper at 0°C is 0.00427, What is the resistance at 100°C? 4.The resistance of a wire is 126.48 ohms at 100°C and 100 ohms at 30°C. Determine the temperature coefficient of copper at 0DC. .004270
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