Question: A small immersion heater can be used in a car to heat a cup of water for coffee or tea. If the heater can heat
A small immersion heater can be used in a car to heat a cup of water for coffee or tea. If the heater can heat 120mL of water from 25oC to 95oC in 8.0min,
(a) Approximately how much current does it draw from the car’s 12-V battery, and
(b) What is its resistance? Assume the manufacturer’s claim of 60% efficiency.
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