Class X Sciences [papers from previous years] Two resistors, with resistances 10 Ωand 15 Ω, are to be connected to a battery of emf 12 V so as to obtain: (i) minimum current (ii) maximum current (a) Describe the mode of connecting the resistances in each case. (b) Calculate the strength of the total current in the circuit in each case.

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

1.	Class X Sciences [papers from previous years] Two resistors, with resistances 10 Ωand 15 Ω, are to be connected to a battery of emf 12 V so as to obtain: (i) minimum current (ii) maximum current (a) Describe the mode of connecting the resistances in each case. (b) Calculate the strength of the total current in the circuit in each case.
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