Question

What is the electric potential of a 2.2 µC charge at a distance of 6.3 m from the charge? Recall that Coulomb’s constant is k = 8.99 × 109 N • ___ V What is the electric potential at a distance of 99 m from the charge?___ V

Answer 1

The first part of the question is 3,100 V.

The second part of the question is 200 V.

Answer 2

Electric potential due to a point charge is given by

$V = \frac{kQ}{r}$

here we know that

Q = charge

r = distance from the charge

$V = \frac{9*10^9* 2.2* 10^{-6}}{6.3}$

$V = 3142.8 Volts$

now again by the same equation

$V = \frac{kQ}{r}$

$V = \frac{9*10^9* 2.2* 10^{-6}}{99}$

$V = 200 Volts$