An initially uncharged capacitor is connected to a 110 V supply in series with a resistor. Immediately after the circuit is closed, a current of 7.0x10^-5 A flows through the resistor. The time constant of the circuit is 6.7s So calculate the capacitance in the circuit.

An initially uncharged capacitor is connected to a 110 V supply in series with a resistor. Immediately after the circuit is closed, a current of 7.0x10^-5 A flows through the resistor. The time constant of the circuit is 6.7s So calculate the capacitance in the circuit.

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 5PP: Three capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 -...

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Concept explainers

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

An initially uncharged capacitor is connected to a
110 V supply in series with a resistor. Immediately
after the circuit is closed, a current of 7.0x10^-5 A
flows through the resistor. The time constant of the
circuit is 6.7s
So calculate the capacitance in the circuit.

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