Q. 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?
A) 0.5 Ω
B) 1 Ω
C) 4 Ω
D) 0.25 Ω
Explanation
[Solution] R/4 = 0.25 Ω gives R = 1 Ω; in series 4R = 4 Ω. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.