A device used to test whether an object is carrying a charge or not is called as:

Electrometer

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Telescope

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Electroscope

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Voltmeter

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Solution

The correct option is C Electroscope
An electroscope is a device used to detect the presence of electric charge on a body. A metal rod is fitted into the mouth of a large jar with the help of a cork. At the lower end of the metal rod, a pair of thin leaves of gold or aluminium is suspended. When a charged body is touched to the mouth of the jar, its leaves diverge as they are of same nature and repel each other.

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Identify the name of the device that can be used to test whether an object is carrying a charge or not. When a charged body is brought near the object the two thin leaves attached to the rod move away from each other indicating a presence of charge.

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