Name:
_______________________
02/17/2006
Ch.
18
Useful Numbers: k=8.99x109 N m2/C2
1) 2 charges are placed at
the base corners of an isosceles triangle with 3m sides and 2m base: -4mC
at bottom left and +2mC at the bottom right.
a) What is the total
electric field at the top corner of the triangle?
b)
What would
the force be on a -4mC charge placed at the
top corner of the triangle?
2) Three
charged conducting balls are initially separated. Sphere A has a charge of ‑80nC, Sphere B has a charge of
32nC, and Sphere C has a charge of 12nC.
a)
Spheres A and B are brought into contact and then separated. What are the charges on the 3 spheres?
b)
Next, Spheres B and C are brought into contact and then separated. What are the charges on the 3 spheres?
c)
Next, Spheres A and B are brought into contact and then separated. What are the charges on the 3 spheres?
d)
Finally, Spheres A, B, and C are all brought into contact and then
separated. What are the charges on the
3 spheres?
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Sphere A |
Sphere B |
Sphere C |
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Initial
Charge |
-80nC |
32nC |
12nC |
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a) |
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b) |
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c) |
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d) |
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