How could two wires of resistances, 8ohms and 4 ohms be connected in a circuit,so as to obtain an effective resistance of 2ohms.
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for getting effective resistance 2 ohm we should connect 8 ohm resistor and 4 ohm resistor in parallel to each other
1 / Req = 1 / 8 + 1 / 4 = ( 1 + 2) / 8 = 3 / 8
Req = 8 / 3= 2.6 ohm ..
in approx u can say effective resistance is 2 ohm
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