# electromagnetics problem

Discussion in 'Electronics Homework Help' started by Reduan tonmoy, Jul 31, 2013.

1. ### Reduan tonmoy

3
0
Dec 24, 2012
pls anyone help me by solving this math,

Problem:
Two point charge +2Q and -Q coulombs are located at (-1,0,0) & (1,0,0) respectively in free space. find
i. Electric field
ii.potential
in XY plane(i.e. z=0)

[Note: for simplify the calculation |Q|=1]

Last edited: Jul 31, 2013
2. ### (*steve*)¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥdModerator

25,496
2,837
Jan 21, 2010
OK, perhaps you can start by telling us what you can figure out for yourself.

3. ### Reduan tonmoy

3
0
Dec 24, 2012
sorry i can't understand ....

4. ### (*steve*)¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥdModerator

25,496
2,837
Jan 21, 2010
If you don't understand, you need to go back to your teacher, notes, or text.

Surely you understand something?

We don't do people's homework for them, so you need to try and maybe we can help where you are stuck or tell you where you go wrong.

5. ### dprabhakar

4
0
Aug 1, 2013
I think ur question is incomplete but the formula used is E=kQ/r^2
where in this case r=2 units, K=8.854*10^-12
V=Er
take Q as both Q1 in one case & Q2 in other case

3
0
Dec 24, 2012