Question

what is gold leaf electroscope ?​

Answer 1

Answer:

it is an appratus that detects the electric potential. it also detects the presence of electric charge and nature. the device consist of a wide metallic bottle having glass windows. the opening of the bottle is closed with a cork of some insulating material. a brass rod passes through this cork. the upper end of the rod is fitted with a brass disc and the other end is annexed to two gold leaves. with the help of a connecting screw fitted near the base, the bottle is earthed.

Answer 2

Explanation:

• This is one of the earliest instruments to be devised to detect and compare charges.
• It consists of a brass rod with a brass disc at the top and two plates at the bottom.
• The rod is fixed inside a closed glass jar .
• One of the plates is fixed, while the other, which is a very thin gold plate, is hinged at its upper end and can move.
• The electroscope gets its name from the thin gold plate, which is called a gold leaf.
• Although the movable plate can be made of any conductor, gold is preferred because it can be beaten into a very thin leaf.
• A thin leaf is light and moves easily, which improves the sensitivity ot the instrument.
• The glass jar protects the plates from air currents.
• Earthed conducting sheets are placed around its ower half so that induce charges are earthed and improve the working of the electroscope.

• When the electroscope is uncharged, the gold leaf hangs vertically due to gravity, or remains parallel to the fixed plate.
• However, when a charged body is brought in contact with the brass disc, the gold leaf moves apart, or diverges.
• This is because both the fixed plate and the gold leaf get similar charges and hence, repel each other.
• The extent to which the gold leaf diverges depends on the magnitude of the charge.