PE point charges
November-17-12
2:17 AM
Find the electric potential energy of a system of charges.
Chapter 25 Page 1
E = grad V
November-18-12
11:52 AM
Over a certain region of space, the electric potential is
V=5x-3x2y+2yz2. Find the expressions for the x, y, and z
components of the electric field over this region. What is the
magnitude of the electric field at the point P that has coordinated
(1,0,-2) m?
Chapter 25 Page 2
V Charged Rod
November-18-12
12:17 PM
A rod of length L located along the x axis has a total charge Q
and uniform linear charge density. Find the electric potential at
a point P located a distance d from one end of the rod.
Chapter 25 Page 3
V=0
November-25-12
4:03 PM
A particle with charge +q is at the origin. A particle with
charge -2q is at x=2m on the x axis. For what finite
value(s) of x is the electric potential zero?
Chapter 25 Page 4
Speed of charge
November-25-12
4:29 PM
A particle has charge -5μC and mass 2.0X10-4 kg. It moves
from point A, where the electric potential is VA=+200V, to
point B, where the electric potential is VB=+800V. The electric
force is the only force acting on the particle. The particle has
speed 5.0m/s at point A. What is its speed at point B?
Chapter 25 Page 5
ΔV inside cylinder
November-29-12
2:39 PM
Charge of uniform density 50nC/m 3 is distributed
throughout the inside of a long nonconducting cylindrical
rod (radius=5.0cm). Determine the magnitude of the
potential difference of point A (2.0cm from the axis of
the rod) and point B (4.0cm from the axis).
Chapter 25 Page 6