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Name:____________________________________________________Date:_______________Period:__
January 13th, 2013 – Electric fields
1. A positive charge of 1.0 x 10-5C experiences a force of 0.20N when located at a certain point. What is the
electric field intensity at that point?
2. What charge exists on a test charge that experiences a force of 1.4 x 10-8N at a point where the electric
field intensity is 2.0 x 10-4 N/C?
3. A test charge experiences a force of 0.20N on it when placed in an electric field intensity of 4.5 x 105
N/C. What is the magnitude of the charge?
4. The electric field in the atmosphere is about 150N/C downward. Find the electric force on a proton with
a charge of +1.6 x 10-19C.
5. A positive test charge of 8.0 x 10-5C is placed in an electric field of 50.0 N/C intensity. What is the
strength of the force exerted on the test charge?
6. Electrons are accelerated by the electric field in a television picture tube of strength 1 x 105N/C. Find the
force of an electron if the charge of an electron is -1.6 x 10-19C.
7. How strong would an electric field have to be to produce a force of 1.00N is the charge was 1.0 x 10 -3C?
Grade received?