Question

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:

• A. \( 5 C_1 = 3 C_2 \)
• B. \( 3 C_1 = 5 C_2 \)
• C. \( C_1 + C_2 = 0 \)
• D. \( 9 C_1 = 4 C_2 \)

Hint:

For capacitors connected in parallel, the charges redistribute according to the capacitances.

Answer 1

The Correct Option is B

Step 1: Capacitors in parallel.
When capacitors are connected together, the charge redistributes such that the potential on each becomes zero. The relation between the capacitors is found by equating the charge on each.

Step 2: Apply charge conservation.
The condition for potential to become zero is \( 3 C_1 = 5 C_2 \). Thus, the correct answer is (2).