Worksheet #5 - Solutions

# Worksheet #5 - Solutions - Physics 202 SI Session Worksheet...

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Physics 202 SI Session Worksheet 5 Solutions Problem 1. Part A. There is (almost) no current going through V 1 and none going through the switch so there is none going through the power supply. There is only one power supply so there is no current anywhere in the circuit. Therefore A 1 and A 2 are zero. V 2 must also be zero then because otherwise charges would move through the wires connecting the two terminals and A 1 and/or A 2 would read non-zero. V (0) equals 10.0 because there is no voltage drop across r. Part B. A 2 is in series with R 3 so whatever current goes through A 2 also goes through R 3 . R 3 is attached to the top and bottom of the voltmeter V 2 . = = = 8 75 . 0 6 2 2 3 A V A V R The same argument follows for R 2 with V 2 and A 1 . = = = 12 50 . 0 6 1 2 2 A V A V R The potential difference between the two terminals of R 1 is the difference between V 1 and V 2 . The current is the sum of R 2 and R 3 . = = 6 . 1 25 . 1 2 1 A V R Part C.

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