Now the greatest
speed with which a signal or information can go from one point to another
is c, the speed of light Thus, the effect of any motion of q1 on q2 cannot
FIGURE 1 9 Electric field at a point
due to a system of charges is the
vector sum of the electric fields at
the point due to individual charges Rationalised 2023-24
Electric Charges
and Fields
17
arise instantaneously