WBCS.LIVE practice question

If two electrical resistors of 8 ohms each are connected in parallel, what is their equivalent resistance?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 16 ohms
  2. 8 ohms
  3. 4 ohms
  4. 2 ohms

Correct answer and explanation

Correct answer: 4 ohms

Explanation: āœ… Correct Answer: C) 4 ohms šŸ“š Explanation: When resistors are connected in a parallel circuit, the reciprocal of the total equivalent resistance is equal to the sum of the reciprocals of individual resistances (1/R = 1/R1 + 1/R2). For two 8-ohm resistors, the calculation is 1/8 + 1/8 = 2/8, which simplifies to 1/4. Therefore, the total equivalent resistance is exactly 4 ohms.