Download Practice Questions on Fields

Name ________________________
Regents Physics
Electric Fields Practice
1. A positive test charge of 8.0  10-5 C is placed in an electric field. It experiences a force of 4.0  10-3 N. What
is the intensity of the field at this point?
2. A negative charge of 2.0  10-8 C experiences a force of 0.060 N when in an electric field. What is the
magnitude of the field intensity at the point where the charge is located?
3. A charge of 2.0  10-4 C is placed in the electric field around a larger object which has a negative charge.
The force acting on the charge is 8.0  10-4 N.
a) What is the intensity of the electric field at the position of the test charge?
b) Is the field directed toward or away from the larger object?
4. What net force acts on a test charge of 4.0  10-3 C when it is in an electric field at a point where the field
intensity is 20 N/C?
5. What charge exists on a test charge that experiences a force of 1.0  10-8 N at a point where the electric field
intensity is 2.0  10-4 N/C?
6. A positive test charge of 3.0  10-4 C is placed between a pair of parallel plates. One is positive and the other
is negative. The force acting on the test charge is 0.9 N.
a) What is the intensity of the field at the location of the charge?
b) The charge is moved 2.0 cm closer to the positive plate. How much force acts on it now?