Class X Sciences [papers from previous years] Two resistors, with resistances 5 Ωand 15 Ω are to be connected to a battery of emf 9 V so as to obtain: (i) minimum current (ii) maximum current (a) Show with the help of a diagram how you would connect the resistances in each case. (b) Calculate the strength of the total current in the circuit in each of the two cases.

Class X Sciences [papers from previous years] Two resistors, with re

1.	Class X Sciences [papers from previous years] Two resistors, with resistances 5 Ωand 15 Ω are to be connected to a battery of emf 9 V so as to obtain: (i) minimum current (ii) maximum current (a) Show with the help of a diagram how you would connect the resistances in each case. (b) Calculate the strength of the total current in the circuit in each of the two cases.
Answer» MINIMUM current join the both RESISTANCE in series.(ii) for maximum current join both resistors in parallel (a) see the attachment(b) for minimum:-resistance are join in series so total resistance is R = 5 + 15 = 20 Ωfrom ohm's low currentI = V = 9 = 0.45 A R 20 for maximum:- resistance are join in parallel so total resistance is 1 = 1 + 1 R 5 15 = 3 +1 Ω 15 1 = 4 Ω R 15for R = 15 Ω 4from ohm's low currentI = V = 9 X 4 = 2.4 A R 15