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Q1: Rt= approx 13.87Ohm
R=12 K Ohm
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kindly sir students have to do some by self..
for 2nd Q..
we have to find Vr1 and Vr2 just..
basically this is a series circuit so its current is constant ..so current is constant for whole circuit..and current is also given in R2 ..it is nt just for R2 its for all resistances..
further we have a R1 is given and current is given so we can find Vr1 very easily ..Vr1=IR1
next we have Vr1,Vr3 and S so we can use this formula to determine Vr2..
where s is a external source ..
i think its enough to tell u
bhai Q1 solve karain to Rt 10 bachta hai us se next kia procedure kia hai to 13.87ohms aia hai please tell about this
Rt=total Resistance ..it just calculated by combinations of resistances ..like series and parallel..
series resistances combine by simply adding..
parallel resistances combine ..R1*R2/R1+R2...
final resitance value is 13.87
thanks for yr favorable rply
See the attached file please