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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Self Evaluation Test - Electric Chages and Fields

  • question_answer
    A charge is situated at a certain distance from an electric dipole in the end-on position experiences a force F. If the distance of the charge is doubled, the force acting on the charge will be

    A) F/4                   

    B)        F/8

    C) 2F                    

    D)        F/2

    Correct Answer: B

    Solution :

    [b] \[E=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{2p}{{{r}^{3}}};E\propto \frac{1}{{{r}^{3}}}\Rightarrow F\propto \frac{1}{{{r}^{3}}}\] Hence, the force will become F/8.


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