Q: Two resistors R₁ and R₂ arranged in parallel combination in an electrical closed circuit are made of the same material and of same thickness. If the length of R₂ is twice the length of R₁, then the total resistance R satisfies
(a)3R = 2R₁
(b)3R = 2R₂
(c)2R = 3R₁
(d)2R = 3R₂
Correct Answer: (a)