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Q. 65

Expert-verified
Found in: Page 657

### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

# In Problems 63 through 66 you are given the equation(s) used to solve a problem. For each of these a. Write a realistic problem for which this is the correct equation(s). b. Finish the solution of the problem

(a) A disc with a radius of and a charge of that is uniformly distributed. Discover an equation for the strength of the electric field at a point on the axis at a distance from the center.

(b) The solution is

See the step by step solution

## Step 1 : Given information and formula used

Given :

Theory used :

The electric field due to a uniformly charged disc at a point very distant from the surface of the disc is given by:

( is the surface charge density on the disc)

## Step 2 : Writing a realistic problem and finding the solution of the problem

(a) Realistic problem :

Given a disc with a radius of and a charge of that is uniformly distributed. Discover an equation for the strength of the electric field at a point on the axis at a distance from the center. If

(b) Solution :

From the previous expression, finding the value of z :