Question

As shown in the figure, a very thin sheet of aluminium is placed in between the plates of the condenser. Then the capacity

• A. Will increase
• B. Will decrease
• C. Remains unchanged
• D. May increase or decrease

Answer 1

Answer: (C)

Remains unchanged

Answer 2

Since aluminum is a metal, therefore field inside this will be zero. Hence it would not affect the field in between the two plates, so capacity $= \frac { q } { V } = \frac { q } { E d }$ remains unchanged.