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Unformatted text preview: 3. Shown in the ﬁgure below are two point charges, Q1 and Q2 , and the
location of point P . All locations (x,y) in the ﬁgure are labelled in meters.
Evaluate all of the following: Point P
(x=4, y=4) Q = +4 µ C
(x=−1, y=0) Q = −2 µ C
(x=2, y=−1) (a) Find the magnitude and direction of the electric ﬁeld, E at the point
P.
(b) What would be the magnitude of the force on a particle of charge
q = 4µC placed at point P.
(c) What is the potential, V, at the point P?
(d) How much work is required to bring the q = 4µC charge from inﬁnity
to the point P.
(e) Assume that the q = 4µC charge has a mass of m = 12µg and is
released from rest starting at the point P. What will be the velocity
of this mass when it reaches inﬁnity (note: nonrelativistic)? 3 ...
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This note was uploaded on 09/27/2011 for the course PHY 132 taught by Professor Rijssenbeek during the Spring '04 term at SUNY Stony Brook.
 Spring '04
 Rijssenbeek
 Charge

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