Question

What is an electroscope? Draw a labelled diagram of an electroscope and explain its working.

Answer 1

Answer:

It is a device which used to detect the charge on a body.

Answer 2

Electroscope:

• This device is used to detect electric charges and it detects Coulomb electrostatic force in the object.
• It is majorly used in electrostatic machines.

Construction of electroscope:

The labelled diagram of an electroscope is attached below.

• Electroscope has glass container with a open at the top.
• The open is fitted with rubber cork which has rod inside the glass container and knob at the top.
• The rod is fixed with two metal leaves.

Working of electroscope:

• When a charged electric rod is moved towards the metal knob.
• The polarity of the knob changes according to the charge of the rod.
• This changes charge of the metal leaves inside the container.
• When metal leaves does not conduct charges, it falls downward. When metal leaves conduct charges, the leaves repels and spreads out.