An electroscope is a device that detects charge on objects that touch it or are brought near it. john rubs a piece of cotton fabric on a plastic rod and then touches the rod to the electroscope. what methods of charging does john use? john charges the rod through induction, then charges the electroscope through friction. john charges the rod through conduction, then charges the electroscope through induction. john charges the rod through friction, then charges the electroscope through induction. john charges the rod through friction, then charges the electroscope through conduction

An electroscope is a scientific instrument that contains a small amount of an electrical charge on a person's body. The first electroscope with a pivoting needle is termed sensorium. The Coulomb electrostatic energy, which produces the movement of the test charge, is used by the electroscope to determine the charge.

They will oppose one another because when the plastic rod and the cotton fabric are rubbed together, they receive the same charges, and similar charges repel each other. The straws will reject each other as a consequence.

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