Question

2. A particle with a charge of 5nC has a distance of 0.5m away from a charge of 9.5nC. What is

its electric potential energy?

3. Find the electric potential at a distance of 8cm from a 7.58pC charge.

4. What is the electric potential given 0.58m away from a 18uC charge?

5. Calculate the amount of electric potential energy possessed by 2.52x10^-10C at a point

where the electric potential is 4.7 Volts.

6. The electric potential at a distance of 0.92m from a point charge is -8.41x10^5 V. what is the

quantity of the point charge?

Answer 1

2.

$U=\frac{kq_1q_2}r=855~nJ,$

3.

$\varphi=\frac{kq}r=0.85~V,$

4.

$\varphi=\frac{kq}r=279~kV,$

5.

$U=q\varphi=1.2~nJ,$

6.

$q=\frac{\varphi r}{k}=-86~\mu C.$