 Electric Fields
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Practice 14 QuestionsShow answers
• Question 1
30 seconds Q. In the diagram below, P is a point near a negatively charged sphere. Which direction best represents the direction of the electric field at point P?
Right
Left
Up
Down
• Question 2
30 seconds
Q. Which quantity and unit are correctly paired?
electric field strength and N/C
electricity and Coulombs
electrostatic force and electrons
electric field strength and E
• Question 3
30 seconds
Q. A point charge Q is far from all other charges. At a distance of 2 m from Q, the electric field is 20 N/C. What is the force a charge of 5 Coulombs feels?
4 N
100 N
40 N
10 N
• Question 4
30 seconds
Q. Which of the following statements is false about electric field lines
electric field lines cannot cross
electric field lines point away from positive charge
electric field lines are always straight lines
electric field lines show how a proton would move in an electric field
• Question 5
30 seconds Q. At which point is the electric field the strongest
A
B
C
D
• Question 6
30 seconds Q. At which point is the electric field the weakest?
A because it is the furthest away
A because the field lines are further apart
C because the field lines are further apart
C  because it is the furthest away
• Question 7
30 seconds Q. Consider the electric field lines shown in the diagram below. From the diagram, it is apparent that object A is ____ and object B is ____.
+,+
+,-
-,+
-,-
• Question 8
30 seconds Q. Consider the electric field lines drawn at the right for a configuration of two charges. Several locations are labeled on the diagram. Which of these shows the ranking in order of weakest to strongest correctly
A, E, C
D, E, C
D, B, A
A, D, B
• Question 9
30 seconds
Q. An electrostatic force of 2 X 102. newtons is exerted on a charge of 4 coulomb at point P in an electric field. The magnitude of the electric field intensity at P is
8 X 102 N/C
5 N/C
2 X 10-2 N/C
50 N/C
• Question 10
30 seconds
Q. It is observed that Balloon A is charged negatively. Balloon B exerts a repulsive effect upon balloon A. Would the electric field vector created by balloon B be directed towards B or away from B and why?
towards because electric field lines point away from negative charges
towards because electric field lines point away from positive charges
away because electric field lines point away from negative charges
away because electric field lines point toward positive charges
• Question 11
30 seconds Q. Qand Qare two charges creating an electric field. Based on the electric field lines, we can conclude
Qand Qare both positive
Qand Qare both negative
Qis positive and Qis negative
Qis negative and Qis positive
• Question 12
30 seconds Q. Which of the following is a true statement about the electric field between the two plates?
The field is attractive between the plates and uniform in strength
The field is repulsive between the plates and uniform in strength
The field is attractive between the plates and strongest near the positive
The field is repulsive between the plates and strongest near the positive
• Question 13
30 seconds
Q. The electrical force between charges is strongest when the charges are
close together
far apart
the electric force is constant everywhere.
there is no pattern
• Question 14
30 seconds
Q. What is the magnitude of the electric field intensity at a point where a proton experiences an electrostatic force of magnitude 2.30 x 10-25 newton?