parallel circuit has three branches. An ammeter is connected in series with the output of the power supply and indicates a total flow of 2.8 A. If branch 1 has a current flow of 0.9Ampsand branch 2 has a current flow of 1.05Amps, what is the current flow through branch 3?

parallel circuit has three branches. An ammeter is connected in series with the output of the power supply and indicates a total flow of 2.8 A. If branch 1 has a current flow of 0.9Ampsand branch 2 has a current flow of 1.05Amps, what is the current flow through branch 3?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter2: Basic Electricity

Section: Chapter Questions

Problem 30RQ: True or False: Ohms law applies to all types of electrical circuits.

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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

A parallel circuit has three branches. An ammeter is connected in series with the output of the power supply and indicates a total flow of 2.8 A. If branch 1 has a current flow of 0.9Ampsand branch 2 has a current flow of 1.05Amps, what is the current flow through branch 3?

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