Here,
is the gradient operator and represents the direction and magnitude slope of the electric potential in 3 dimensions. In Cartesian coordinates it is given by,
Thus,
For this problem,
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is the gradient operator and represents the direction and magnitude slope of the electric potential in 3 dimensions. In Cartesian coordinates it is given by,
in the ques it is a.r not (a vector).(r vector) so how can we solve the problem without assuming a is perpendicular to r
ReplyDeletePotential is a scalar quantity so it must be a•R so as to get a scalar result.
DeleteIn question, both A and R are vectors.
ReplyDelete"where a is a constant vector and r is the radius vector of a point"