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Standard XII

Physics

Coulomb's Law - Mathematical Form

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 insulatingstrings of equal length L, from a hook fixed to a stand. If the whole set up is taken in a satellitethen the angle θ between the two strings is : (in equillibrium)

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

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