Questions
Three charges Q, (+q) and (+q) are placed at the vertices of an equilateral triangle of side I as shown in the figure. If the net electrostatic energy of the system is zero, then Q is equal to
detailed solution
Correct option is A
Potential energy of the system,U=kQql+kq2l+kqQl=0 ⇒kql(Q+q+Q)=0⇒Q=-q2Talk 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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