Some Natural Ph...

When an uncharged body B is brought in contact with a positively charged body A, then

Statement A: positive charge will flow from A to B
Statement B: electrons will flow from B to A

The electric charge acquired by a glass rod when rubbed with a silk cloth is

Rahul first rubbed a glass rod with silk, then touched the rod with an electroscope. Then he rubbed an ebonite rod with fur and brought it near the charged electroscope.

Statement A: The leaves of the electroscope will move further apart.
Statement B: The glass rod will become positively charged and the ebonite rod will become negatively charged.

Lightning and electric shock are examples of

Match Column-I with Column-II and select the correct answer:
 

Choose the correct statements from the following:

(A) A gold leaf electroscope is used to detect charges.
(B) The air in the path of the lightning becomes very cold.
(C) Like charges attract each other.
(D) Lightning conductors are used to protect a building from lightning.

Read the following statements and choose the correct option:

Statement A: To protect a building from lightning, a thick lightning rod, forked at top, is installed on the roof of the building down to earth.
Statement B: Sharp edges can hold a large amount of charge.

A and B are playing in a park with many tall trees. Suddenly lightning strikes in the sky. What would be the best possible precaution preferred by them at that time?

The rarest type of lightning is:

Where do positive charges accumulate on a cloud?