The charge density on a disk of radius R = 12.2 cm is given by σ = ar,

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The charge density on a disk of radius R = 12.2 cm is given by σ = ar, with a = 1.34 μC/m3 and r measured radially outward from the origin (see figure below). What is the electric potential at point A, a distance of 36.0 cm above the disk? Hint: You will need to integrate the nonuniform charge density to find the electric potential. You will find a table of integrals helpful for performing the integration. V

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The charge density on a disk of radius

R = 12.2 c m

is given by

σ = a r

, with

a = 1.34 μ C / m^{3}

and

r

measured radially outward from the origin (see figure below). What is the electric potential at point

A

, a distance of

36.0 c m

above the disk? Hint: You will need to integrate the nonuniform charge density to find the electric potential. You will find a table of integrals helpful for performing the integration.