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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Charge and Coulombs Law

  • question_answer
    A charge \[{{q}_{1}}\] exerts some force on a second charge \[{{q}_{2}}\]. If third charge \[{{q}_{3}}\] is brought  near, the force of \[{{q}_{1}}\] exerted on \[{{q}_{2}}\]                                                            [NCERT 1971]

    A)                    Decreases

    B)                    Increases

    C)                    Remains unchanged 

    D) Increases if \[{{q}_{3}}\] is of the same sign as \[{{q}_{1}}\] and decreases if \[{{q}_{3}}\] is of opposite sign

    Correct Answer: C

    Solution :

               The force will still remain \[\frac{{{q}_{1}}{{q}_{2}}}{4\pi {{\varepsilon }_{0}}{{r}^{2}}}\]


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