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 half-ring the potential is V, taking zero potential to be at infinity. How much charge is contained in the half-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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