Electric Potential

Example 1.    Answer

Given that 2 points are on an equipotential line.

a. Does this imply that no work is done in moving a test charge from one point to another on the line?

b. Does this imply (moving the charge) that no force need be exerted?

Example 2.    Answer

Potential Due to Point Charges

Example 3.    Answer

What is the electric potential from a 4.00 mC point charge at a distance of 15.0 cm from the charge?

Capacitance

Example 4.    Answer

Two plate of a capacitor hold 2500 μ C and -2500 μ C respectively. The potential difference is 850 V.

What is the capacitance?

Electric Energy Storage

Example 5.    Answer

If you apply 650 V to to a 2200 pF capacitor, how much energy is stored?

A Puzzling Problem In Physics