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How Things Work
Homework 11
Due: Tuesday, December 8th, 2015
Conceptual Questions:
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E12.6
E12.8
E12.12
E12.19
E12.20
E12.27
The resistor in the circuit shown acts as an area heater in your home.
a) Explain how the transistor acts like a switch that turns the heater on
and off.
b) Assuming the heater wires are in an area that might be touched
(while it is off and cool), explain why this circuit is safer than if the
heater were on the top side of the transistor.
110V
Vcontrol
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