Assuming the capacitor is fully charged, what is the voltage across the capacitor 2 seconds after the switch is opened? E=33 V, R1=300 kN, R2=300 km, C=10 uF R2 + R1 55.2 V None of the above 31.5 V 47.3 V 23.6 V HE

Assuming the capacitor is fully charged, what is the voltage across the capacitor 2 seconds after the switch is opened? E=33 V, R1=300 kN, R2=300 km, C=10 uF R2 + R1 55.2 V None of the above 31.5 V 47.3 V 23.6 V HE

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter20: Capacitance In Ac Circuits

Section: Chapter Questions

Problem 12RQ: What is the minimum AC voltage rating of each capacitor in Question 11?

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Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.

Question

100%

Assuming the capacitor is fully charged, what is the voltage across the capacitor 2
seconds after the switch is opened? E=33 V, R1=300 kſ, R2=300 k, C=10 uF
R2
R1
ww
+
55.2 V
None of the above
31.5 V
47.3 V
23.6 V
39.4 V
#6
C

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