9. a. A 5Q resistor is connected to a 20 V D.C. power supply. Calculate the time for 3000 J of energy to be converted to heat in this resistor. b. Calculate the power output of a 120 Q heater which operates on a 20 V D.C. supply.

9. a. A 5Q resistor is connected to a 20 V D.C. power supply. Calculate the time for 3000 J of energy to be converted to heat in this resistor. b. Calculate the power output of a 120 Q heater which operates on a 20 V D.C. supply.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 60PE: Integrated Concepts (a) What energy is dissipated by a lightning bolt having a 20,000-A current, a...

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