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Standard XII

Physics

Electric Field Due to a Sphere and Thin Shell

A dipole havi...

Question

A dipole having charges +q and -q is fixed on a rough surface as shown. Another charge Q of mass m is placed at dis†an ce d from this dipole. Find the minimum value of d for which charge Q will not move.(given a is much smaller than d, co efficient of static friction u=0.5

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