A small immersion heater can be used in a car to heat a cup, Ask an Expert

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Q. A small immersion heater can be used in a car to heat a cup of water for coffee or tea. Assume the manufacturer's claim of 60% efficiency. If the heater can heat 130 mL of water from 5°C to 95°C in 13.0 min. Approximately how much current does it draw from the car's 12 V battery?

What is its resistance?

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Category:- Physics
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