Answer: (a) charged
An electroscope is a device that may be used to determine whether or not an object is charged. It is made up of two metallic strips that are positioned closely together. When similar charges are applied to both strips, they repel each other and become wide open.
The electroscope can be used for the following purposes:
- Its objective is to discover static charges.
- An electroscope can be used to determine the nature of electric charges.
- An electroscope can be used to evaluate the magnitudes of two distinct charges.