Question

How can three resistor of resistance 20 Ohm 3 Ohm and 6Ohm be connected to give a total resistance of 4 Ohm and 1 Ohm

Answer 1

Answer:

If thre resistances connected in parallel combiantion gives 1 ohm resistance

while 3 and 6 ohm in parallel and third in series gives 4 ohm

Explanation:

1/Req= 1/2+1/3+1/6 = 3+2+1/6=6/6 = 1⇒Req= 1 ohm

1/Req=1/6+1/3⇒1/Req = 1+2/6= 1/2⇒Req = 2 ohm now with 2 ohm in series gives    Req = 2 + 2= 4 ohm