Electrostatics Question 392

Question: Two point charges of 20μC and 80μC are 10cm apart. Where will the electric field strength be zero on the line joining the charges from 20μC charge [RPET 1997]

Options:

A) 0.1m

B) 0.04m

C) 0.033m

D) 0.33m

Show Answer

Answer:

Correct Answer: C

Solution:

Let neutral point be obtained at a distance x from 20 mC charge.

Hence at neutral point 20(x)2=80(10x)2

therefore x=+0.033m



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