Turn in your assigned Practice Problems to your teacher today!

Practice A- Potential Energy and Potential Difference

1. As a particle moves 10.0 m along an electric field of strength 75 N/C, its electrical potential energy decreases by 4.8 × 10⁻¹⁶ J. What is the particle’s charge?

2. What is the potential difference between the initial and final locations of the particle in Problem 1?

3. An electron moves 4.5 m in the direction of an electric field of strength 325 N/C. Determine the change in electrical potential energy.

Practice B- Capacitance

1. A 4.00 μF capacitor is connected to a 12.0 V battery.

a. What is the charge on each plate of the capacitor?

b. If this same capacitor is connected to a 1.50 V battery, how much electrical potential energy is

        stored?

2. A parallel-plate capacitor has a charge of 6.0 μC when charged by a potential difference of 1.25V.

     a. Find its capacitance.

     b. How much electrical potential energy is stored when this capacitor is connected to a 1.50 V battery?

3. A capacitor has a capacitance of 2.00 pF.

     a. What potential difference would be required to store 18.0 pC?

     b. How much charge is stored when the potential difference is 2.5 V?

4. You are asked to design a parallel-plate capacitor having a capacitance of 1.00 F and a plate separation of 1.00 mm. Calculate the required surface area of each plate. Is this a realistic size for a capacitor?