PHYS208 Fundamentals of Physics II

Quiz 1

[2 charges on a clock face]

Two charges are fixed on the perimeter of a circular clock face.
+Q is placed at 2 o'clock; +2Q is at 12 o'clock.

Where should a third charge be placed on the perimeter so that the electric field is zero at the center (point P)?

What relative charge strength is required at that point for the electric field to be zero?

Last updated Feb. 20, 1998.
Copyright George Watson, Univ. of Delaware, 1998.