please explain the following:
Asked by
| 1st Jun, 2009,
11:02: PM
correct answer is not indicated here due to some typo error. the solution for this problem is as follows:
let the charge at the origin be q. the force between the charge q and q1 is
f1 = k' q q1 / a2
let k' = (1 / 4 x pi x episilon0)
the force between the charge q and q2 is
f2 = k' q q2 / (2a)2
since q1 = k q2
then f1 = k' q k q2 / a2
f1 = 4 k f2
since the net force on origin is zero then
f1 + f2 = 0
4 k f2 + f2 = 0
k = - 1 / 4
Answered by
| 2nd Jun, 2009,
09:32: AM
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