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August 2, 2015

Homework Help: Physics

Posted by Tiffini on Sunday, November 14, 2010 at 11:53pm.

3. You have a simple circuit with a light bulb (R = 50 Ω) and a power supply (you can treat it like a battery with 120 V). Unfortunately, a loose screw fell on the circuit and is connected in parallel to the light bulb. You can treat the screw as a resistor with a resistance of 1 Ω.
a. Sketch this circuit





b. What effect does the screw have on the circuit? Focus on the current and voltage.




c. This situation is also known as a “short circuit.” Why is this bad if it happens at home?

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