Q. 9

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Found in: Page 652

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

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

# A sphere of radius R has charge Q. The electric field strength at distance is. What is the ratio of the final to initial electric field strengths if (a) Q is halved, (b) R is halved, and (c) r is halved (but is still)? Each part changes only one quantity; the other quantities have their initial values

(a) The ratio of the final to initial electric field strengths, if Q is halved, is .

(b) The ratio of the final to initial electric field strengths if radius R is halved is .

(c) The ratio of the final to initial electric field strengths, if distance r is halved, is .

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