A sphere of radius R has charge Q. The electric field strength at distance r > R
Question:
A sphere of radius R has charge Q. The electric field strength at distance r > R is Ei. What is the ratio Ef/Ei of the final to initial electric field strengths if
(a) Q is halved,
(b) R is halved,
(c) R is halved (but is still > R)? Each part changes only one quantity; the other quantities have their initial values.
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a E Q4E 0 r 2 If Q is halved then E is also halved Thus E f E i 12 b The field outside a sphere is ...View the full answer
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Related Book For 
Physics for Scientists and Engineers A Strategic Approach with Modern Physics
ISBN: 978-0133942651
4th edition
Authors: Randall D. Knight
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