Quiz 2 Section: Name:

Quiz 2
Phys 222, Fall 2014
Problem 1.(2 points.) -Q charge is located 5cm above origin on y-axis. Also, +Q
charge is located 5cm below the origin on y-axis. In what direction would the E-field
at point P, located 3cm from origin on x-axis, point to?
A) x axis
B) -x axis
C) y axis
D) -y axis
Problem 2.(2 points.) +Q charge is evenly distributed along the surface of a hollow
spherical conductor. The electric field inside the sphere is
A) largest at the center.
B) zero inside the surface.
C) largest near the conductor surface.
D) largest somewhere between the center and the surface.
Problem 2.(1 points.) If the charge on each of two identical tiny spheres is doubled
while their separation is reduced by a factor of 2, their force of interaction
A) will double
B) will stay the same
C) will increase by a factor of 16
D) will increase by a factor of 8
E) will stay the same