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Standard XII

Physics

Electric Potential Due to Shell

Two small bal...

Question

Two small balls having equal positive charge $Q$ (coulomb) on each are suspended by two insulating
strings of equal length $L$ , from a hook fixed to a stand. If the whole set up is taken in a satellite
then the angle $θ$ between the two strings is : (in equillibrium)

O^{o}

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90^{o}

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180^{o}

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0 < θ < 180^{o}

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Solution

The correct option is C $180^{o}$
There is a condition of weightlessness in a satellite.
Therefore, mg=0
Due to electrostatic force of repulsion between the balls, the string would become horizontal.
Therefore, angle between the string =180

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Two small balls having equal positive charge $Q$ (coulomb) on each are suspended by two insulating
strings of equal length $L$ , from a hook fixed to a stand. If the whole set up is taken in a satellite
then the angle $θ$ between the two strings is : (in equillibrium)

The correct option is C $180^{o}$
There is a condition of weightlessness in a satellite.
Therefore, mg=0
Due to electrostatic force of repulsion between the balls, the string would become horizontal.
Therefore, angle between the string =180