Question

How could two wires of resistances, 8ohms and 4 ohms be connected in a circuit,so as to obtain an effective resistance of 2ohms.

Answer 1

Answer:

you can connect the resistances of 8 ohms and 4 ohms in parallel to get effective resistance of 2 ohms....

1 / Req = 1 / R1 + 1 /R2

1 / Req = 1 / 8 + 1 / 4

1 / Req = ( 1 + 2 ) / 8 = 3 / 8

Req = 8 / 3 = 2.6 ohm.. in approx u can say 2 ohm