Electrostatics Question 242

Question: Charge q is uniformly distributed over a thin half ring of radius R . The electric field at the centre of the ring is [Roorkee 1999]

Options:

A) 6.0×1027C

B) 2.67×107C

C) 6×1023C

D) 1.67×1023C

Show Answer

Answer:

Correct Answer: B

Solution:

Q=ne ;

where n = number of moles  ×6.02×1023×10

therefore Q=50018×6.02×1023×10×1.6×1019=2.67×107C



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