Questions
Three charges Q, + q and +q are placed at the vertices of a right-angled isosceles triangle as shown. The net electrostatic energy of the configuration is zero if Q is equal to
detailed solution
Correct option is B
Net electrostatic energy U=kQqa+kq2a+kQqa2=0 ⇒kqaQ+q+Q2=0⇒Q=-2q2+2Talk to our academic expert!
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Three point charges of equal value q are placed at the vertices of al equilateral triangle. The resulting lines of force should be sketch as in
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