This video lecture from Current Electricity (F.Sc. 2nd Year Physics) . In this video you will the different ways of combination of resistances and the effect of voltage and current during different combination and also how we use it with circuit either in parallel r series way depend upon the requirement of circuit. Find more e-learning material and educational video lectures in Urdu at www.maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.