Question

Two capacitors of capacitance $C_1$ and $C_2$ respectively are charged to $120V$ and $200V$ respectively. It is found that by connecting them together the potential on each one can be made zero. Then :

• A. $5C_1=3C_2$
• B. $3C_1=5C_2$
• C. $3C_1+5C_2=0$
• D. $9C_1=4C_2$

Answer 1

The correct option is B $3C_1=5C_2$

For potential to be made zero, after connection if $q_1=q_2$
or $C_1{V}_1=C_2{V}_2$
or $120C_1=200C_2$
or $3C_1=5C_2$