A B Figure P18.53

University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter2: Vectors
Section: Chapter Questions
Problem 21CQ: What is wrong with the following expressions? How can you correct them? (a) C=AB , (b) C=AB , (c)...
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A circuit consists of three identical lamps, each of
resistance R, connected to a battery as in Figure P18.53. (a)
Calculate an expression for the equivalent resistance of the
circuit when the switch is open. Repeat the calculation when
the switch is closed. (b) Write an expression for the power
supplied by the battery when the switch is open. Repeat the
calculation when the switch is closed. (c) Using the results
already obtained, explain what happens to the brightness of
the lamps when the switch is closed.

A
B
Figure P18.53
Transcribed Image Text:A B Figure P18.53
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