In this worksheet, we will practice calculating the absolute electric potential at a given displacement from a ring of charge.

Q1:

A uniformly charged ring of radius 10 cm is placed on a nonconducting table.
It is found that, 3.0 cm above the centroid of the ring, the potential
is V, taking zero potential to be at infinity. How much charge is contained in the ring?

A C

B C

C C

D C

E C

Q2:

A rod bent into the arc of a circle of radius
0.500 m subtends an
angle at the center of the circle as
shown. Each equals
. If the rod is
charged uniformly with a total density 0.033 C/m, what is the magnitude of the electric field at
?

A N/C

B N/C

C N/C

D N/C

E N/C

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