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Question
Three identical charges are placed on three vertices of a square. If the force acting between q1 and q2 is F12 and between q1 and q3 is f13 then `"F"_13/"F"_12` = ____________.
Options
`1/2`
2
`1/sqrt2`
`sqrt2`
MCQ
Fill in the Blanks
Solution
Three identical charges are placed on three vertices of a square. If the force acting between q1 and q2 is F12 and between q1 and q3 is f13 then `"F"_13/"F"_12` = `1/2`.
Explanation:
`"F"_12 = 1/(4piepsilon_0) . "q"^2/"a"^2 and "F"_13 = 1/(4pi epsilon_0) . "q"^2/("a"sqrt2)^2`
`therefore "F"_13/"F"_12 = 1/2`
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