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The distance between the centres of two identical solid spheres each of radius 5 cm kept in free space is 40 cm. If each one is holding a charge of $2,\mu C$, then the work done in bringing their centres to a separation of 30 cm is
The distance between the centres of two identical solid spheres each of radius 5 cm kept in free space is 40 cm. If each one is holding a charge of $2,\mu C$, then the work done in bringing their centres to a separation of 30 cm is
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Physics Tip: For like charges, bringing them closer always needs positive external work because repulsion increases potential energy.
Updated On: Apr 27, 2026
- $36\times10^{-2}$ J
- $12\times10^{-2}$ J
- $6\times10^{-2}$ J
- $18\times10^{-2}$ J
- $3\times10^{-2}$ J
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The Correct Option is
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