WorksheetsFormative Assessment 8.2
Total questions: 10
Worksheet time: 10mins
Which one of the arrows shown in the figure best represents the direction of the electric field between the two uniformly charged metal plates?
A
B
C
D
As a proton moves in the direction of the electric field lines,
it is moving from low potential to high potential and gaining electric potential energy.
it is moving from low potential to high potential and losing electric potential energy.
it is moving from high potential to low potential and gaining electric potential energy.
it is moving from high potential to low potential and losing electric potential energy.
As a proton moves in a constant direction perpendicular to the electric field lines
it is moving from low potential to high potential and gaining electric potential energy.
it is moving from low potential to high potential and losing electric potential energy.
it is moving from high potential to low potential and gaining electric potential energy.
both its electric potential and electric potential energy remain constant.
The electric potential at a distance of 2 m from a certain point charge is 400 V relative to infinity. What is the potential (relative to infinity) at a distance of 4 m from the same charge?
200 V
50 V
400 V
100 V
A region of space contains a uniform electric field, directed toward the right, as shown in the figure. Which statement about this situation is correct?
The potential at all three locations is the same.
The potentials at points A and B are equal, and the potential at point C is higher than the potential at point A.
The potential at points A and B are equal, and the potential at point C is lower than the potential at point A.
The potential at point A is the highest, the potential at point B is the second highest, and the potential at point C is the lowest.
A small object with a 2.5 μC charge is accelerating horizontally on a friction-free surface at 0.0050 m/s² due only to an electric field. If the object has a mass of 2.0 g, what is the magnitude of the electric field?
2.0 N/C
4.0 N/C
0.0020 N/C
0.0040 N/C
If it takes 50 J of energy to move 10 C of charge from point A to point B, what is the magnitude of the potential difference between points A and B?
500 V
50 V
5.0 V
0.50 V
When the magnitude of the charge on each plate of an air-filled capacitor is 4 μC, the potential difference between the plates is 8 V. What is the capacitance of this capacitor?
0.1 μF
500 μF
100 μF
0.5 μF
An air-filled capacitor has a potential difference between the plates of 80 V. If the charge on each of the plates of the capacitor has magnitude 8.0 µC, what is the electrical energy stored by this capacitor?
640 µJ
320 µJ
50 nJ
60 nJ
An electron moves along the path shown in the figure. Which of the following shows the correct ranking of the magnitude of the change in the electric potential for the electron.
A>B>C>D
A=B>C=D
A=C>B>D
C=D>A>B
