The effective resistance of a parallel connection that consists of four wires of equal length, equal area of cross-section and same material is 0.25 Ω. What will be the effective resistance if they are connected in series ?

1. 0.25 Ω

2. 0.5 Ω

3. 1 Ω

4. 4 Ω

Doubtly Asked 30 Oct 2026 NEET UG 2021 Practice test neet Save WhatsApp Report

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Answer: 4. 4 Ω

Key idea: four equal resistors R: parallel gives \(R/4\), series gives \(4R\).

\(R/4=0.25\ \Omega\Rightarrow R=1\ \Omega\). In series: \(4R=4\ \Omega\). Option 4.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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