Question: In a parallel circuit with two resistors of 6 ohms and 12 ohms, what is the equivalent resistance?

Options:

1. 4 ohms
2. 8 ohms
3. 2 ohms
4. 3 ohms

Correct Answer: 4 ohms

Solution:

For parallel resistors, 1/R_eq = 1/R1 + 1/R2. Here, 1/R_eq = 1/6 + 1/12 = 2/12 + 1/12 = 3/12, so R_eq = 4 ohms.