Answered: Electroscopes are used to figure…

Electroscopes are used to figure out if an object is charged measure the amount of charge in an object determine the type of the xharge an object may have all of the above none of these

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter3: Static Electricity

Section: Chapter Questions

Problem 5RQ: An electroscope has been charged with a negative charge. An object with an unknown charge is brought...

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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

Electroscopes are used to

		figure out if an object is charged
		measure the amount of charge in an object
		determine the type of the xharge an object may have
		all of the above
		none of these

Expert Solution

Step 1

Electroscope is the instrument which is used to detect if the body is charged or not. The leaves of the electroscope are deflected when charge body is brought near it. When a negatively charged body is brought near it, the electrons in the scope will get repelled toward the leaves, this will balance the total charge. The leaves will move towards each other. Similarly, when the positive charged body is brought near it, the leaves will move away from each other. The electroscope is shown below:

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