Question

two point charges +3 microcoulomb and -6 microcoulomb separeted by a distance 20 cm in air. at what point on the line joining the two charges is the potential is zero​

Answer 1

Answer:

Let x be the point where potential is zero

NOW,

K3/x - 6k/r-x =0

K3 /x = 6k/r-x

K and K cancel

3(r-x) = 6x

3r - 3x = 6x

3r = 6x - 3x

3r = 3x

X = r