Posted by **Sarah** on Wednesday, March 4, 2009 at 5:28pm.

Identical +7.74 μC charges are fixed to adjacent corners of a square. What charge (magnitude and algebraic sign) should be fixed to one of the empty corners, so that the total potential at the remaining empty corner is 0 V?

I thought that this is what i should do. But I cant get the correct answer...

the total potential is

V = k[7.74μC/r + 7.74μC/√2 *r + q/r]

0 = k/a[(7.74μC+q)√2 + 7.74μC]

or (7.74μC+q)√2 = - 7.74μC

q = -7.74μC[1+1/√2]

## Answer This Question

## Related Questions

- Physics - Identical +3.92 ìC charges are fixed to adjacent corners of a square. ...
- Physics - Identical +6.15 µC charges are fixed to adjacent corners of a square. ...
- physics - Identical +1.39 µC charges are fixed to adjacent corners of a square. ...
- physics - Identical +3.07 µC charges are fixed to adjacent corners of a square. ...
- physics - Identical +1.45 µC charges are fixed to adjacent corners of a square. ...
- Physics - Identical +2.83 μC charges are fixed to adjacent corners of a ...
- physics - Identical +2.83 μC charges are fixed to adjacent corners of a ...
- physics - Identical +7.74 ƒÊC charges are fixed to adjacent corners of a square...
- Physics - Identical point charges of +2.1 ìC are fixed to diagonally opposite ...
- Physics - Identical point charges of +2.1 ìC are fixed to diagonally opposite ...

More Related Questions