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# PHY101 Physics Assignment No 03 Solution & Discussion Due Date:11-01-2013

Physics (PHY101) VU of Pakistan
Assignment 3: (Fall 2012)
PHYSICS (PHY101)
TOTAL MARKS: 35
Due Date: 11/01/2013
DON’T MISS THESE Important instructions:
• To solve this assignment, you should have good command over first 28 lectures.
• Plagiarism is prohibited that is why you are advised to avoid copy/paste from internet etc,
if found at any stage will be graded as zero marks.
• Upload assignments (Microsoft word) properly through LMS, (No Assignment will be
accepted through email).
• All students are directed to use the font and style of text as is used in this document.
• Don’t use colorful back grounds in your solution files.
• Use Math Type or Equation Editor etc for mathematical symbols.
• This is not a group assignment, it is an individual assignment so be careful and avoid
copying others’ work. If some assignment is found to be copy of some other, both will be
awarded zero marks. It also suggests you to keep your assignment safe from others. No
excuse will be accepted by anyone if found to be copying or letting others copy.
Don’t wait for the last date to submit your assignment.
Question # 1
(a)What is the electric field at the location of the test charge shown below? And what is the
direction of electric field? Marks = 5
Physics (PHY101) VU of Pakistan
(b) What are the magnitude and direction of the electric field at point A shown below? Marks = 6
Question # 2
Find the force on the electron in figure shown below and also determine the acceleration of
electron? Mention the direction of force and acceleration as well.
Note that mass of electron is 9.1×10-31kg, and the value of charge on electron is (-1.6×10-19 C)
Marks = 7
Question # 3
Is it true to say that electric field lines are the same as electric field vectors. If yes give an
example if not explain it. Marks = 6
Question # 4
Suppose you increased the amount of the charge of a test charge, and the force exerted on it
changed. This means the field you were assessing must have changed. Marks = 5
Question # 5
(a) It takes 10.0 J of work by the right-hand wand to separate the charges as shown in figure.
What is the change in potential energy? Marks = 3
Physics (PHY101) VU of Pakistan
(b) Is it true to say that electric potential energy and electric potential are the same?
Either yes or no explain in each case. Marks = 3
<Wish you good luck>>>>>>>>>>>>

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### Replies to This Discussion

plz help us Tariq sir.....

time bohat short reh gya hai..

i think electric feild at location k lie ye formula lage ga = F/q

Wrong.....

use E=F/q

ya E =F/A and then find acclration bt howw the 5 q??????????????????

Ladakiyo kabi koch apnay sa be kiya kro...

solution plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz phy 101

ali ibrar kia solution ha plz reply

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