PHYSICS 6B
Ch.18 Worksheet
clas.ucsb.edu/staff/vince/
1)
In a certain region of space the electric potential V is known to be
constant. Is the electric field in this region (a) positive, (b) zero, or (c)
negative?
2)
Find the change in electric potential energy as charges of (a) 2.2 x 10
6
C
and (b) 1.1 x 10
6
C moves from a point A to a point B, given that the
change in electric potential between these points is ∆V
= V
B
V
A
= 24 V.
3) A particle with mass m=1.75 x 10
5
kg and charge q = 3.20 x 10
6
C
initially passes through point A, moving toward point B at speed 5.00 m/s.
∆V
= V
B
V
A
= 60.0 volts.
What is the speed of the particle at point B?
4)
A +1.2 μC charge and a 1.2 μC charge are placed at positions (0.5m,0)
and (0.5m,0), as shown in the figure.
At which of the points A, B, C, or D is
the electric potential smallest in value?
At which of these points does it have
its greatest value?
Calculate the electric potential at points A, B, C, and D.
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PHYSICS 6B
Ch.18 Worksheet
clas.ucsb.edu/staff/vince/
5)
Two capacitors, one 12.0 μF and other of unknown capacitance C, are
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 Spring '11
 Staff
 Capacitance, Charge, Electric Potential, Energy, Potential Energy, Work, 5 kg, 0.5m, 0.0115 J

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