Download Electrostatics Problems 4 – Electric Fields due to a

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Electrostatics Problems 4 – Electric Fields due to a Point Charge
1.
A 4.8 E-15 C charge is located in a region of space. What is the electric field a
distance of 6 E-3 m away from this charge?
2.
What is the electric field strength a distance of 3 E-6 m from a 2-proton helium
nucleus? [Hint: what is the charge of this nucleus? It is NOT +2!!]
3.
*What is the strength of the electric field produced a distance of 8 E-8 m from a
nucleus* containing 10 protons? [Hint: what is the charge of this nucleus? Recall
there are always Zero electrons in a nucleus.]
4.
*A source charge Q is fixed in place, and a probe is placed a distance R from the
charge, measuring an Electric Field E = 180 N/C. An external process reduces the
charge to ⅓ Q. What should the probe measure for E?
5.
*A source charge Q is fixed in place, and a probe is placed a distance R from the
charge, measuring an Electric Field E = 180 N/C. The probe is moved to a location
3R. What should the probe measure for E?
CP Physics Electrostatics Problems 4
1. 1.2 N/C
2. 320 N/C
Electric Fields 2
3. 2.25 E 6 N/C
4. 60 N/C
Bradshaw 11
5. 20 N/C