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Two resistors, with resistances 5  …

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Two resistors, with resistances 5  and 10  respectively are to be connected to a battery of emf 6 V so as to obtain: (i) minimum current following (ii) maximum current following. (a) How will you connect the resistances in each case? (b) Calculate the strength of total current in the circuit in case (i) (c) Calculate the strength of total current in the circuit in case (ii)
  • 1 answers

Gaurav Seth 5 years, 2 months ago

Given: Two resistors with resistances R1=5ohm and R2=10ohm, V=6volt 

(a) For minimum current these two should be connected in series. For maximum current these two should be connected in parallel. 

(b)In series, 

Total resistance = 5+10 = 15ohms 

Therefore total current drawn = V/R = 6/15 = 0.4amps 

In parallel, 

Total resistance R is given as 1/R=1/R1+1/R2 

1/R =1/5+1/10 

1/R=3/10 

R=10/3 ohm 

Therefore total current drawn by the circuit = V/R = 6/(10/3) =1.8amps. 

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