CATCH UP CA FOR PHYSICS FOR ENGINEERS
Exercise 1:
Charge is distributed uniformly, starting at the origin, along the positive semi-infinite x axis
with linear charge density. Determine the electric field at the point  0,0, z  .
Exercise 2:
Consider a closed triangular box resting
within a horizontal electric field of
magnitude E  7.80  104 N C as shown in
Figure 5. Calculate the electric flux through
(a) the vertical rectangular surface, (b) the
slanted surface, and (c) the entire surface of
the box.
Fig.5
Exercise 3:
As shown in Figure 7a, a charge q1  2.0C is located at the origin and a charge q2  6.0C
is located at  0, 3.0  m . (a) Find the total electric potential due to these charges at the point P,
whose coordinates are  4.0,0  m . (b) Find the change in potential energy of the system of two
charges plus a third charge q3  3.0C as the latter charge moves from infinity to point P (Fig.
7b).
Fig.7
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