In this worksheet, we will practice calculating the absolute electric potential at a given position relative to a charged disk.
Q1:
A CD disk of radius is sprayed with a charged paint so that the charge varies continually with radial distance from the centre in the following manner: .
Find the potential at a point 4.0 cm above the centre.
- A GV
- B GV
- C GV
- D GV
- E GV
Q2:
A thin conducting plane has a charge density of C/m2. An electron is placed 0.80 cm above the the plane. What is the magnitude of the acceleration of the electron?
- A m/s2
- B m/s2
- C m/s2
- D m/s2
- E m/s2
Q4:
A proton moves horizontally at an initial speed directly toward a large, positively charged plate that has a surface charge density of C/m2. What is the protonβs horizontal displacement from the plate at the point where it comes instantaneously to rest?
- A m
- B m
- C m
- D m
- E m
Q5:
A thin conducting plate 4.00 m on a side is given a total charge of Β΅C. A point is located at the center of the plate 2.00 cm above its surface.
What is the magnitude of the electric field at the point ?
- A N/C
- B N/C
- C N/C
- D N/C
- E N/C
What is the magnitude of the electric force on an electron at the point ?
- A N
- B N
- C N
- D N
- E N
An electron is moved 1.00 cm vertically downward from the point . What is the work done by the electric field on the electron?
- A J
- B J
- C J
- D J
- E J