As per the diagram a point charge 
is placed at the origin O. work done in taking another point charge 
from the point A [coordinates (0,a)] to another point B [coordinates (a,0)] along the straight line AB is.
A
Zero
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Work done is equal to zero because the potential of
A and B are the same 
no work is done if a particle does not change its potential energy.
i.e., initial potential energy = final potential energy
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
Figure shows the field lines of a positive point charge. The work done by the field in moving a sma…
For equal charges q each are placed at four corners of a square of side a each. Work done in carryi…
The work done to move a unit charge along an equipotential surface from P to Q
A system consists of two charges and with no external field placed at (-5 cm, 0,0) and (5 cm, 0, …
Two condensers, one of capacity C and other of capacity are connected to a V volt battery. As show…
The electric potential at point A is 20 volts and B is – 20 volts. The work done by an external for…