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What is the charge (in nC) on the ball?

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The electric field strength 1.7 cmcm from the surface of a 10-cmcm-diameter metal ball is 8.0×104 N/CN/C .

asked Feb 5, 2016 in PHYSICS by anonymous

1 Answer

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Step 1:

The electric field strength is image.

The distance between surface to metal ball is image.

The diameter of the metal ball is image.

The radius of the metal ball is image.

The total distance from surface to center of the ball is image.

Electric field due to charged particle is image, where

image is the permittivity of free space image.

is the charge of the electron.

is the distance between the two point charges.

Step 2:

Find the charge of the metal ball.

Substitute image, image and image in image.

image

image

image

image

image.

The charge on the metal ball is image.

Solution:

The charge on the metal ball is image.

answered Feb 5, 2016 by Sammi Mentor
edited Feb 5, 2016 by steve
It says its wrong, to turn my answer into dimensions of electric charge! what am i doing wrong?

Please check the updated answer.

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