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43) Two resistors with resistance 10? and 15? are to be connected to a battery of e.m.f 5v as to obtained i) maximum current ii) minimum current a) how will you connect the resistance in each case ? b) Calculate the strength of total current in the circuit in the 2 cases


i ) parallel combination
Total resistance , R = R1* R2 / R1 + R2 = 6 ohm
 Total current , I = V / R = 5/ 6 = .8333 A
Different current will flow through each resistor ,
 Current through 10 ohm

I = V/ R = 5 /10 = .5 A
Current through 15 ohm ,

I = 5/15 = .333 A

ii ) series combination

Total resistance , R = R1+R2 = 10+15 = 25 ohm 
The current flow will be same in two of the resistors ,

I = V / R = 5 / 25 =  .2 A


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