Physics, 24.06.2021 14:00 21vdawson

Negatively charged free electrons move in one direction , and positively charged holes move ir the opposite direction. true or false

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Answer from: Katepratt7637

The correct statement is True.

Explanation:

There are two types of charges in the electric field:

Negative charge known as electronsPositive charge known as holes

The above two are oppositely charged species and we also know that electric current is the flow of free electrons in a current.

Negative charges (Electrons) flow from the negative terminal to the positive terminal while positive charges (holes) flow from the positive terminal to the negative terminal. Thus, they move in the opposite direction.

Hence, the correct statement is True.

Answer from: Quest

Is a vector quantity that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

Answer from: Quest

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

so, refractive index of medium = 300000/200000 = 1.5

1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

∞ refractive index is usually for opaque mediums. so third medium is opaque medium.

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Negatively charged free electrons move in one direction , and positively charged holes move ir the o...

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