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two charges -0.2microfarad and -0.8microfarad are held 30milimetres apart in air. A test charge of 1picofarad is moved along the line joining the two charges. Where will it experience zero resultant force

two charges -0.2microfarad and -0.8microfarad are held 30milimetres apart in air. A test charge of 1picofarad is moved along the line joining the two charges. Where will it experience zero resultant force

Grade:12th pass

1 Answers

PAURUSH GUPTA
26 Points
one year ago
10 mm from -0.2uF charge .
Solve using F=kq1q2/r^2
let distance from 0.2 be x. therefore distance from 0.8 is 30-x.
Put values of qi and r and equate to get answer

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