# General Physics Questions

## Transcribed Text

Pa1t B. Short questions. Steps and explana tions a.re reguil'ed. l. [30 pts] Consider the atTangement of capacitors shown below. Let Cl = 15 pF, C2 = 3.0 pF, C3 = 6.0 pF, and C4 = 20 pF. [Answer in 3 significant figur es] a) [10 pts] What is the equivalent capacitance? Cl C2 H C3 C4 a b b) [ 5 pts] What is the equivalent resistance of the circuit? If you didn 't find R in pa1t a) use R = 6 P. to comple te the work here. e) [6 pts] Ifyou want to replace these capacitors with one single parallel square plate capacitor of size 1.0 cm x 1.0 cm x O. 50 mm. What dielectric constant material you need to use? 2. [20 pts] Consider the following circuit. Assume an ideal batte1y and ideal meters are used. The ammeter reads 1.25 A and the voltmeter reads 7.5 V. [Answer in 2 signifi cant figur es] R 20 60 a) [15 pts] What is the value ofR and l of the batteiy? b) [14 pts] If the total voltage across points "a" and "b" is 15 V, how much charge is on C2?

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