Three 3Ω resistors in parallel: equivalent resistance is: MCQ with Answer and Explanation

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Three 3Ω resistors in parallel: equivalent resistance is:

A. 9Ω

B. 3Ω

C. 1Ω

D. 0.33Ω

Answer: Option C

Solution (By JKSSB Mock Tests)

1/R_eq = 1/3 + 1/3 + 1/3 = 1 ⇒ R_eq = 1Ω. For n equal resistors in parallel: R_eq = R/n. Memory tip: 'Parallel: reciprocal sum; result < smallest resistor'. Basic circuit calculation frequently tested in competitive exams to verify parallel combination formula.

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Correct Answer: Option A

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