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Cisneros778
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Homework Statement
A water heater consisting of a metal coil that is connected across the terminals of a 24-V power supply is able to heat 270 mL of water from room temperature (20°C) to boiling point in 70 s. What is the resistance of the coil? (When entering units, use ohm for Ω.)
Homework Equations
R = dV/I
The Attempt at a Solution
I am not sure how to approach this one. I think the temperature is throwing me off. I have V so I am trying to find I. I was thinking of using I = dQ/dT since I have the time interval, but finding Q isn't possible unless I am given values for charges. I almost want to use Q = mc*dT but Q here is thermal energy so I'm back to square one.