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Assignment 3: (Spring 2015)

PHYSICS (PHY101)

TOTAL MARKS: 25

Due Date: 27/07/2015

 

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Question # 1

A particle with a charge of 0.17coulombs is in a uniform electric field of strength 55 N/C as shown below. An external force pushes the charge 0.12 meters directly against the field. What is the change in electric potential energy?                                                                            Marks 8


 

 

 

 

 

 

 

Question # 2

A)    Where does an electron go when it is free to move: to a location of higher or lower potential? Explain it.

B)    A student of Physics calculated a negative potential difference between two points. Is that possible? Explain it by giving a solid reason.                                              Marks 3 +3 = 6

Question # 3

What is the electric potential at the location of the test charge as shown in the figure?    Marks 5

 

 

 

 

 

 

 

Question # 4

What is the potential difference between the plates shown in the following figure?       Marks 6

 

 

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Guys start discussion not wait for solution

Please Discuss here about this assignment.Thanks

Our main purpose here discussion not just Solution

We are here with you hands in hands to facilitate your learning and do not appreciate the idea of copying or replicating solutions.

Dear Students Don’t wait for solution post your problems here and discuss ... after discussion a perfect solution will come in a result. So, Start it now, replies here give your comments according to your knowledge and understandings....

First question:

q= .17C

∆x= .12 m

E= 55N/C

     In order to find Change in Electric Potential Energy = ∆Ue = ?

We need electric potential = V = ?

∆Ue = q∆V

∆V = -E∆x = -(55 N/C)(0.12m) = - 6.6Nm/C = -6.6 J/C

Now  to find:

∆Ue = q∆V = (0.17C)(-6.6J/C)= 1.122 J

Is it correct?

Aslam o Alaikum !

Lets guys start discussion. Please give your views. 

A)    Where does an electron go when it is free to move: to a location of higher or lower potential? Explain it.

A student of Physics calculated a negative potential difference between two points. Is that possible? Explain it by giving a solid reason

kici student ko phy 101 ki assignment chahie tou inbox plz

Give me the ideas of question 2 a juzzzz
Electrons
To gain an insight into how electricity flows through a material, we need to understand the structure of "Atoms" (nature's building blocks). All matter is made up of Atoms, whether the matter is Carbon, Hydrogen, Gold, Silver or any other material. Each Atom is comprised of Protons, which are positively-charged; Neutrons, which have no charge; and Electrons, which are negatively-charged. The Protons and Neutrons form the "nucleus" of the Atom, and the Electrons travel in "orbits" around the "nucleus" much like the earth travels around the sun. Protons and Electrons follow specific Laws of Attraction. Since they have opposite charges, they "attract" one another similar to the north and south (opposite) poles of magnets. If an Atom has the same number of Protons as Electrons, then the Atom is balanced and stable. The orbiting Electrons remain in orbits around their protons and neutrons in the nucleus as long as nothing upsets the balance.

Free Electrons Can Move
All matter is made up of carbon, hydrogen, and other atoms. Each atom is comprised of protons, which are positively charged; neutrons, which have no charge; and electrons, which are negatively charged. The protons form the nucleus of the atom and the electrons travel in orbits around the nucleus much like the earth travels around the sun.
Protons and electrons follow specific laws of attraction. Since they have opposite charges, they attract to one another. If an atom has the same number of protons as electrons, then the atom is balanced, and stable. The orbiting electrons remain in their orbits as long as nothing upsets the balance.

When something upsets this balance, some of the Electrons become "knocked out of their orbits". They are now called "Free Electrons” and these free electrons can readily move to another nucleus. As defined earlier, when these electrons move from atom to atom, we call this “electricity”. The free electron condition can be caused by many different things including rubbing cat's fur on Amber (static), passing a Wire through a Magnetic Field (generator), or using two very specific chemicals together (Dry Cell Battery).

Free Electrons can Move from Atom to Atom
The free electrons are attracted to atoms where there is an electron missing and will fill the space just vacated by the first free electron. When this conditions occurs continuously, the movement of electrons becomes the basis for the flow of electrical energy we call "current".

Electrons move from lower to higher potential. And potential difference can be negative.

How How How ?????

Please someone post the solution I can't solve this assignment please..

phy101 asimnt solution

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