(a) 1/5 Ω(b) 1/25 Ω(c) 1/10 Ω(d) 25 Ω

1.	(a) 1/5 Ω(b) 1/25 Ω(c) 1/10 Ω(d) 25 Ω
Answer» Minimum resistance is observed when they are connected in parallel (you can take it as a thumb rule that the resistance of a group of resistors connected in parallel will be less then the minimum resistance present in the group) thus net resistance 1/R = 1/R1 + 1/R2 + .... and so it can be calculated to be 1/25 (b) 1/25 Ω is the minimum resistance

Answer»

Minimum resistance is observed when they are connected in parallel (you can take it as a thumb rule that the resistance of a group of resistors connected in parallel will be less then the minimum resistance present in the group)

thus net resistance 1/R = 1/R1 + 1/R2 + .... and so it can be calculated to be 1/25

(b) 1/25 Ω is the minimum resistance

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(a) 1/5 Ω(b) 1/25 Ω(c) 1/10 Ω(d) 25 Ω

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