The diagram shows a simplified household circuit. Resistor r 1 = 240.0 represents a lightbulb; resistor
Question:
The diagram shows a simplified household circuit. Resistor r1 = 240.0 Ω represents a lightbulb; resistor r2 = 12.0 Ω represents a hair dryer. The resistors r = 0.50 Ω (each) represent the resistance of the wiring in the walls. Assume that the generator supplies a constant 120.0 V rms.
(a) The lightbulb is initially on and the hair dryer is off. How much does the rms voltage across the lightbulb decrease when the hair dryer is switched on?
(b) How much does the power dissipated in the lightbulb decrease?
(c) Explain why the neutral and ground wires in a junction box are not at the same potential even though they are both grounded at the circuit breaker panel.
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Step by Step Answer:
Use Ohms law and Kirchhoffs voltage law to find the rms voltage and power across the light bulb a Fi...View the full answer
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Related Book For 
College Physics With An Integrated Approach To Forces And Kinematics
ISBN: 978-1260547719
5th Edition
Authors: Alan Giambattista
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