Two capacitors C1 and C2 are charged to 120 V and 200 V respectively. It is found that by connecting them together the potential on each one can be made zero. Then

Question

Two capacitors C1 and C2 are charged to 120 V and 200 V respectively. It is found that by connecting them together the potential on each one can be made zero. Then (A) 5C1=3C2  (B) 3C1=5C2  (C) 3C1+5C2=0  (D) 9C1=4C2

Tardigrade Admin · Accepted Answer

Polarity should be mentioned in the question. Potential on each of them can be zero if, qnet=0 or q1 ± n q2=0 or 120 C1±200 C2=0 or 3 C1±5 C2=0

Q. Two capacitors $C_{1}$ and $C_{2}$ are charged to $120 V$ and $200 V$ respectively. It is found that by connecting them together the potential on each one can be made zero. Then

$5 C_{1} = 3 C_{2}$

$3 C_{1} = 5 C_{2}$

$3 C_{1} + 5 C_{2} = 0$

$9 C_{1} = 4 C_{2}$

Polarity should be mentioned in the question.
Potential on each of them can be zero if, $q_{n e t} = 0$
or $q_{1} \pm n q_{2} = 0$
or $120 C_{1} \pm 200 C_{2} = 0$
or $3 C_{1} \pm 5 C_{2} = 0$

Q. Two capacitors C1​ and C2​ 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

5C1​=3C2​

3C1​=5C2​

3C1​+5C2​=0

9C1​=4C2​