When we rub an ebonite rod with wool and touch the rod to the brass cap of the electroscope, what happens to the gold leaf and why? What is the nature of the charge? Detailed answer.
Answers
Answer:
Please Make The Answer as Brainliest.
Explanation:
On rubbing an ebonite rod with fur, the electrons from the fur get transferred to the ebonite rod. The fur now has a deficiency of electrons and so is positively-charged. On the other hand, the ebonite rod has an excess of electrons and hence is negatively-charged.
In the above case, the fur undergoes positive electrification.
Now, when the negatively charged ebonite rod is touched on the disc of a negatively charged gold leaf electroscope, the divergence between the gold leaves increases as like charges repel each other.
Hence, the divergence increases when an ebonite rod rubbed with fur is brought near the disc of negatively charged electroscope..
Answer:
Golf leaf of an electroscope opens up. Charge on ebonite rod is negative.
Explanation:
When ebonite rod is rubbed with the wool, the negative charge is created on the ebonite rod because ebonite atoms attaracts the electrons of the wool and become negative.
Gold leaf electroscope
Gold leaf electroscope is a device used to check if the body is charged or not. It has folded gold strip that is kept contacted with the brass cap. Gold leaf is kept inside a glass jar. When some charged object is touched to the brass cap both the half parts of the leaf get the same charge and it opens up by electrostatic repulsion as same charges repel each other. So, by this it is known that object is charged or not.
Here, when charged ebonite rod comes in contact with brass cap the charge of ebonite rod is transferred to the brass cap by the charging by contact. This brass cap is conducting and it tranfers all the charge to the gold leaf through conducting wire. The gold leaf opens up as the charge comes on it.