What is the potential energy of the equal positive point charges of 1 μ C each held 1 m apart in air?

Question

What is the potential energy of the equal positive point charges of 1 μ C each held 1 m apart in air? (A)  9× 10-3J  (B)  9× 10-3eV  (C)  1J  (D) zero

Tardigrade Admin · Accepted Answer

: Potential energy =(1/4π ε 0)(q1q2/r) =(9× 109)× (10-6× 10-6/1)J =9× 10-3J

Q. What is the potential energy of the equal positive point charges of $1 μ C$ each held 1 m apart in air?

$9 \times 10^{- 3} J$

$9 \times 10^{- 3} e V$

$1 J$

zero

: Potential energy $= \frac{1}{4 π ε _{0}} \frac{q _{1} q _{2}}{r}$ $= (9 \times 10^{9}) \times \frac{10 ^{- 6} \times 10 ^{- 6}}{1} J$ $= 9 \times 10^{- 3} J$

Q. What is the potential energy of the equal positive point charges of 1μC each held 1 m apart in air?

9×10−3J

9×10−3eV

1J