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Q. 9

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
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Short Answer

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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Step by Step Solution

Step 1: Given information (part a)

Step 2: Explanation (part a)

Step 3: Given information (part b)

Step 4: Explanation (part b)

Step 5: Given information (part c)

Step 6: Explanation (part c)

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