JEE Main & Advanced
Physics
Electrostatics & Capacitance
Question Bank
Charge and Coulombs Law
question_answer
Two charges are at a distance ?d? apart. If a copper plate (conducting medium) of thickness \[\frac{d}{2}\] is placed between them, the effective force will be [UPSEAT 2001; J & K CET 2005]
A) 2F
B) F / 2
C) 0
D) \[\sqrt{2}F\]
Correct Answer:
C
Solution :
Effective air separation between them becomes infinite so force becomes zero.