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Two point charges +q and -q are held fix...

Two point charges `+q` and `-q` are held fixed at `(-d,o)` and `(d,0)` respectively of a x-y coordinate system. Then

A

E at all points on the Y - axis is along `hati`

B

The electric field `vecE` at all points on the X - axis has the same direction

C

Dipole moment is 2qd directed along `hati`

D

Work has to be done in bringing a test charge from infinity to the origin

Text Solution

Verified by Experts

The correct Answer is:
A
`F_("net")rarr` directed along `hati`
`p=2qd` along `(-hati)`
`W=0` as `V_(0)=0` E of all points on x - axis can not have same direction.
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