Railway Science (Physics-Electric Current and its Effects) (Part-IX)

Total Questions: 31

31. When a number of resistance are connected in …. , their combined resistance is less than the smallest individual resistance. [RRB ALP Tier - I (31/08/2018) Afternoon]

Correct Answer: (d) parallel
Solution:

Let two resistor be - 5Ω , 10Ω In series Resistance (R) = R₁ + R₂ ⇒ 5Ω + 10Ω ⇒ R = 15Ω
15Ω > 5Ω (does not satisfy condition).