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4 Find the minimum resistance that can bemade using five resistors each of 1/5 立NCERT Exemplar

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



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