Boni R.

asked • 08/28/17

Find the electric force of circular disk

An annulus is a circular disk with a hole through the center. Suppose an annulus with an outer radius of 9 cm and inner radius of 5 cm is placed horizontally and bears a uniform surface charge density of 325 nC/m2. Find the electric force on a -18 mC test charge placed 12 cm directly above the exact center of the annulus. Assume the same permittivity as in the previous problem.

1 Expert Answer


Arturo O. answered • 08/28/17

5.0 (66)

Experienced Physics Teacher for Physics Tutoring

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.


Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.