How does a sample of an n-type semiconductor electrically neutral though it has an excess negative charge carriers?

Is a p-type semiconductor charged or electrically neutral?

Why n-type and p-type semiconductors are electrically neutral?

Distinguish between an intrinsic semiconductor and p-type semiconductor. Give reason, why a p-type semiconductor crystal is electrically neutral, although n_h>>n_e ?

How many types of electric charges are there?

Consider a coin. It is electrically neutral and contains equal amounts of positive and negative charge of magnitude 34.8 kC . Suppose that these equal charages were concentrated two point charges separated by 10^6 , (radius of the earth). find the force on each such point charge. What do you conclude from these results?

Consider a coin, It is electrically neutral and contains equal amounts of positive and negative charge of magnitude 34.8 kC . Suppose that these equal charages were concentrated two point charges separated by 100 m(-length of a long building),find the force on each such point charge in this case. What do you conclude from these results?

Answer the following: The discharging current in the atmosphere due to the small conductivity of air is known to be 1800 A on an average over the globe. Why then does the atmosphere not discharge itself completely in due course and become electrically neutral? In other words, what keeps the atmosphere charged?

How n-type semiconductor differ from p-type semiconductor ?

A paisa coin is made up of Al-Mg alloy and weights 0.75g. It has a square shape and its diagonal measures 17 mm. it is electrically neutral and contains equal amounts of positive and negative charges. Treating the paisa coins made up of only Al, find the magnitude of equal number of positively and negatively charages. what conclusion do you draw from this magnitude?