question_answer

A particle of mass m and charge q is in an electric and magnetic field given by \[\vec{E}=2\hat{i}+3\hat{j};\vec{B}=4\hat{j}+6\hat{k}.\] The charged particle is shifted from the origin to the point \[P(x=1;y=1)\]along a straight path. The magnitude of the total work done is-                                                                [JEE Main 11-Jan-2019 Evening]

A) (0.15)q

B) (0.35)q

C) (2.5)q

D) 5q

Correct Answer: D

Solution :

[d]: Work done on moving charge in a magnetic field is zero.

For electric field,