Physics
A gold leaf electroscope is to be charged positively by conduction. For this:
- a positively charged rod is held close to the disc of electroscope
- a positively charged rod is placed in contact with the disc of electroscope
- a negatively charged rod is held close to the disc of electroscope
- a negatively charged rod is touched with the disc of electroscope
Answer
a positively charged rod is placed in contact with the disc of electroscope
Reason — A positively charged rod when touched with the disc of electroscope, it will be positively charged because by conduction a conductor gets charged by similar kind of charge as on charging body.
Related Questions
When a glass rod is rubbed with silk, the glass rod and the silk get charged because:
- electrons are transferred from the silk to the glass rod
- electrons are transferred from the glass rod to the silk
- protons are transferred from the silk to the glass rod
- protons are transferred from the glass rod to the silk
The conductor of electricity is:
- wood
- glass
- ebonite
- human body
A glass rod rubbed with silk is touched with the disc of a negatively charged gold leaf electroscope. The divergence of leaves will:
- decrease
- increase
- remain unchanged
- first decreases and then increases
The rod in a gold leaf electroscope is made up of:
- wood
- brass
- glass
- ebonite