Question

two unlike charges 7nc and -10nc are separated at a distance 9cm. find the point of zero potential between the charges? ​

Answer 1

Answer:

Given : r=9 cm =0.09 m

Charge Q=3 nC =3×10

−9

C

Potential at a distance 9 cm, V=

r

kQ

where k=9×10

9

∴ V=

0.09

9×10

9

×3×10

−9

=300 V