Question

Two charged plates with charges $Q$ and $3Q$ are placed $d$ distance apart. Another plate with charge $Q$ is placed between two plates.
Final charges $q_3$ and $q_5$ on the surface of plates are

• A. $\frac{-Q}{2},\frac{-3Q}{2}$
• B. $\frac{-Q}{2},\frac{-5Q}{2}$
• C. $\frac{-3Q}{2},\frac{-5Q}{2}$
• D. $\frac{-3Q}{2},\frac{-3Q}{2}$

Answer 1

The correct option is A $\frac{-Q}{2},\frac{-3Q}{2}$

The charge $Q$ and $3Q$

distance $=d$

another plate with charge $=Q$

Final charges $q_3$ and $q_5$ on the surface of plates are $\to$

$q_3=\frac{-Q}{2}$

$q_5=\frac{-3Q}{2}$