Question

What is an electroscope? Briefly describe the construction and working of a simple electroscope

Answer 1

Answer:

electroscope is an instrument for detecting and measuring electricity, especially as an indication of the ionization of air by radioactivity.

Explanation:

WORKING OF AN ELECTROSCOPE :

•In an uncharged electroscope, the leaves hang straight down.

•When a charged object touches the metal knob, electric charges travel down the rod and into the leaves.

•The leaves spread apart, indicating the presence of an electric charge.

•Since the charge on both leaves is the same the leaves repel each other and spread out.

CONSTRUCTION OF AN ELECTROSCOPE :

An electroscope consists of a metal rod with a knob at the top and a pair of thin metal leaves at the bottom. The rod is inserted in a one hole rubber stopper which fits into a flask.The flask contains the lower part of the rod and the metal leave

Answer 2

Answer:

WHAT IS AN ELECTROSCOPE?

ANS: A electroscope is a device that is used to confirm the presence of charge and it's nautre on a body.

TWO TYPES OF WAYS OF ELECTROSCOPE:

1. GOLD LEAF ELECTROSCOPE
2. PITH BALL ELECTROSCOPE

WHAT IS PITH BALL ELECTROSCOPE AND IT'S CONSTRUCTION?

ANS: This method is the simplest way/kind of electroscope. In the electroscope, it has a small ball of wood or pith which is suspended by a silk thread. This electroscope is more sensitive if the pith ball is coated with aluminium or graphite.

WHAT IS GOLD LEAF ELECTROSCOPE AND IT'S CONSTRUCTION?

ANS: The gold leaf electroscope is the oldest electrical decive which was developed in 1787. It is used to detect and identify the kind of charge. It mainly consists of a metallic disc and rod, fitted in a glass jar through an insulating cork. Two gold leaves or strips are mounted at the other end of the rod. When the disc is touched by a charged body(Induction), the charge is transferred to  the disc and flows through the rod to the leaves and thus the leaves are charged and diverges.

THREE METHOD OF CHARGING:

1. FRICTION
2. CONDUCTION
3. INDUCTION

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Explanation: