Question

two resistors are connected in series it gives 9 ohm. when they are connected in parallel net resistance become 2 ohms . find the value of resistances​

Answer 1

Explanation:

Given that two resistors, R1 and R2 when connected in series their resistance is 9 ohm but

R =R1 + R2 = 9 Ohm

But when they are connected in parallel their net resistance become 2 ohms.

1/R1 + 1/R2 = 2 Ohm

The value of resistance = series + parallel

9 + 2 = 11 ohm