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Two resistors, with resistances, 5Ω and 10Ω respectively are to be connected to a battery of emf 6V so as to obtain:(i) Minimum current flowing(ii) maximum current flowing.a) How will you connect the resistances in each case?b) Calculate the strength of the total current in the circuit in the two cases
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Since, V=IR, therefore,(a) to obtain
(i) minimum current flowing, the Rnet should be higher so, it should be connected in series.
(ii)maximum current flowing, the Rnet should be lower so it should be connected in parallel.
(b)
i. The strength of total current in minimum current flowing circuit is,
Rnet = 5Ω + 10Ω = 15 Ω
Since, V=IR
6 V = I 15Ω
I = 0.4 A
ii. The strength of total current in maximum current flowing circuit is,
1/R_net = 1/R1 +1/R_2
1/R_net = 1/5 + 1/10
Rnet = 3.33 Ω
Since,
V = IR
6V = I 3.33Ω
I = 1.801 A
The strength of total current in minimum flowing circuit is 0.4 A and in maximum current flowing is 1.801 A.
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