A) the electric field E at all points on \[x\] -axis has the same direction.
B) work has to be done in bringing a test charge from infinity to origin
C) electric field at all points on y-axis is along \[x\]-axis
D) the dipole moment is 2qd along the \[x\] -axis.
Correct Answer: C
Solution :
[a] \[\vec{E}\] at all points on x-axis will not have same direction |
[b] \[{{V}_{0}}=0,\] hence no work is done in bringing a test charge from infinity to origin |
[c] \[\vec{E}\] at all points on y-axis will be parallel to x-axis because \[|{{\vec{E}}_{q}}|=|{{\vec{E}}_{-q}}|\] |
[d] Dipole moment is directed along \[(-\vec{i})\] direction |
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