A 50 ? resistor is connected in parallel with a 200 ? resistor to a 20 V power supply. What is the voltage across the 50 ? resistor?
Question 6 options:
20 V 

4 V 

16 V 

15 V 
remember these about Combination of Resistors
if R1 and R2 are the resistances connected in series then effective resiatcne Rnet = R1+R2
if R1 and R2 are connected in parallel, then 1/Rnet =1/R1 +1/R2 or Rnet = R1R2/(R1+R2)
same current passes through each of the ressitor in series combination and
same votage passes through eacf of the resistor in parallel combination
apply ohms law V = iR
where V = volatge and i = current
so here Rnet in parallel = 50* 200 /250 = 40 ohms
so
as same Voltage passes in Parallel combination
here Volatage across 50 ohms resistor = VOlatge across 200 ohms = 20 V
so answer is option 1 <><<<<<<<<<Answer
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