Electrostatics Question 420
Question: Two electric charges and are placed 20 cm apart in air. There will be a point P on the line joining these charges and outside the region between them, at which the electric potential is zero. The distance of P from charge is [EAMCET 2000]
Options:
A) 0.10 m
B) 0.15 m
C) 0.20 m
D) 0.25 m
Show Answer
Answer:
Correct Answer: C
Solution:
Point P will lie near the charge which is smaller in magnitude i.e. -6 m C.
Hence potential at P
therefore x = 0.2 m