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Solved problems for the chapter:

Electric Potential Energy

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Motion of a Charged Particle in an Electric Field

1. Acceleration of an electrically charged particle in an electric field

2. Velocity and distance of an electrically charged particle while moving in an electric field

2.1. Linear motion

2.2. Planar motion

3. Energy of a particle in an electric field

4. Forum

↓ Show theory [1] ↓

Detailed solution steps are available at:

https://en.openprof.com/wb/chapter:electric_potential_energy/4405/

Example 1.

An electric charge is located in a homogeneous electric field. Under the influence of an electric force acting on it, it moves from point A to point B. In doing so, the electric force does work of 0.02 J. Calculate the voltage between the two points.

Example 2.

Two parallel plates contain opposite charges of equal magnitudes. The plates are spaced 1 cm apart. The voltage between them is 100 V. Calculate the electric field strength between the plates. Which plate is at higher potential?

The figure below shows a homogeneous electric field with a strength of 30 kV/cm. Calculate the work done by the electric force during the transfer of charge along the paths:

1-2
1-3
1-4
4-2
1-3-2
1-3-4-1

Homogeneous electric field

Two planes that are perpendicular to a homogeneous electric field of strength 30 kV/cm are spaced 2 cm apart, as shown in the figure below. Point 4 in the figure should have zero potential.

What is the voltage between points 1 and 3?
What is the potential at point 1?

Homogeneous electric field

The voltage between points 2 and 4 according to the figure below is 40 kV. What must be the potential of point 2 in the figure so that point 4 has a potential of -50 kV?

Homogeneous electric field

The figure below shows a homogeneous electric field of strength . The potential at point A is , the distance between points A and B is , and the distance between points B and C is .

What is the potential at point B?
What is the potential at point C?
What electric force would act on a body with charge at points A, B, and C?
How much work is required to move the said body from point A to point C? Calculate in two ways.

Homogeneous electric field .

A voltage is applied across two parallel plates spaced 2 cm apart. There is a vacuum and an electric field of density in the space between the plates. The intermediate space is filled with some ions and . How long does it take each of the ions to reach one of the plates if they are initially in the middle of the distance between the plates? For the mass of the sodium ion, take the mass of a sodium atom, which is approximately . The same applies to the mass of the chlorine ion, which is The base charge is . Ignore gravity.