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PHYS 2114 Exam 3 Fall 2010

# PHYS 2114 Exam 3 Fall 2010 - ~ ~:~-~ j"< ~.h;i~(~_4~...

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., ~':. ! ~.',:~-~ j , .• i,.; .... ' .'.:..,,:', ;'",;' .." "<' ~.h!:::;;i~~'(~_4~ i,; ~~J,;:' : ;:~~;~,~.'i~~~~~~t~;10:' iF1gure 1 , ..... •.•. " Problem 1(See Fig. I, Parts 1 and 2. Coordinate system is given.) Part 1. An AC generator with maximum voltage of 10.0 V and a frequency of 60.0Hz is connected to a resistor R = 2.0 Il The switch S is connected atA so the circuit bypasses the~a..eI6l'A . a. Calculate the rms voltage across resistor. .o.ol"''f1) . b. Calculate the instantaneous resistor voltage all ~ 1.1 s. .-[' c. Calculate the peak current inthe circuit .. ..• ~.~ __ d. If the frequency of the generator is increased, the average poWei:.,'':Yj~+;':lpjH,,'''~r' dissipated in the resistor [increases, ~~es. ~.;;;J"" ., Part 2. Connect switch at B so that the circuit now includes the capacitor. The voltage is read from the capacitor. e. Calculate the cross over frequellCY OJ e an_dcapacitive reactance x•. f. Calculate the capacitor voltage at OJ,. g. This isa [low-, high-) pass filter that [blocks, transmits] frequencies greater than OJ e Circle One Clrde ODe ~ t, ",';~_ '>i.. ~ ',.;,;:" •. [.; , ';~ ""1 : '<4f:::~~':-"',;.~ .. i~:~!i,~~, .

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PHYS 2114 Exam 3 Fall 2010 - ~ ~:~-~ j"< ~.h;i~(~_4~...

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