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Two point charges+q nd -q are held fixed...

Two point charges+q nd -q are held fixed at `(-a,0)` and `(a,0)` respectively of a x-y coordinate system then

A

the electric field E at all point on the axis has the same direction.

B

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

C

positive work is done in bringing a test charge from infinity to the origin

D

All of the above

Text Solution

Verified by Experts

The correct Answer is:
B

Potential is zero at infinite and at origin.
therefore `PD=0`. Hence the work done asked in part `c` is also zero.
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DC PANDEY-ELECTROSTATICS-Level 1 Objective
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  11. There is an electric field E in x-direction. If the work done on movin...

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