A resistor of an unknown resistance is placed in an insulated container filled with 0.50 kg of
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A resistor of an unknown resistance is placed in an insulated container filled with 0.50 kg of water. A voltage source is connected in series with the resistor and a current of 1.2 amps flows through the resistor for 10 minutes. During this time, the temperature of the water is measured and the temperature change during this time is ΔT = 20.00 °C . (a) What is the resistance of the resistor? (b) What is the voltage supplied by the power supply?
Note that the heat energy generated when a substance undergoes temperature change is given by where c is the specific heat capacity, m is the mass, is the change in temperature. The specific heat capacity of water is
Related Book For
College Physics Reasoning and Relationships
ISBN: 978-0840058195
2nd edition
Authors: Nicholas Giordano
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