Lessons

Eamcet Physics
2 nd Year : Unit 1.1 ( Electrostatics ) - Electrostatics

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Q.

A charged sphere of diameter 4cm has a charge density of 10-4C/cm2. The work done in joules when a charge of 40nano-coulombs is moved from infinite to a point, which is at a distance of 2cm from the surface of the sphere, is [in j]

View Answer

Correct choice: A

Explanation:



Work done = potential energy at the given distance r = 2+2 = 4cm from the centre of the sphere

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