CBSE Class 12-science Answered
Point charge q moves from point P to point S along the path PQRS (figure) in a uniform electric field E pointing parallel to the positive direction of the x-axis. The co-ordinates of the point P, Q, R and S are (a, b, 0), (2a, 0, 0), (a, –b, 0) and (0, 0, 0) respectively. The work done by the field in the above process is :
|
(1) | qEa |
(2) | –qEa |
(3) | |
(4) |
Asked by devanshmalhotra2609 | 14 May, 2016, 01:32: PM
Expert Answer
Work done by the electric field is independent of the path.
WPQRS = WPS
= q (Exdx + Eydy + Ezdz)
= q {E (-a) + 0 + 0 ]
WPQRS = -qaE or -qEa
Answered by Yashvanti Jain | 16 May, 2016, 11:26: AM
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