Answer:
When like charges come together, they repel each other. For instance, when the north and south poles of a magnet come together, they push each other apart. The like poles in the magnet repel each other and unlike poles attract each other much. The same reaction occurs in like and unlike charges. Also, the repulsion acts along the line between the two charges.
I think it's b..................
Answer:
Explanation:
Given
Cross-sectional area of two areas is


It is filled with oil of density 
mass of car place on Large area 
Suppose a mass of m kg is placed on smaller area
According to pascal law's intensity of pressure is same at every point on Liquid




Answer:
An insulator holds charge within its atomic structure. Objects with like charges repel each other, while those with unlike charges attract each other. A conducting object is said to be grounded if it is connected to the Earth through a conductor.
Explanation:
Source:https://courses.lumenlearning.com/physics/chapter/18-2-conductors-and-insulators/