Question

tell the answer of b

Answer 1

Minimum Resistance = Resistance in parallel

1/Rp = 1/R1+ 1/R2

Rp = 6 ohm

By Ohm's Law

V = IR

3 = I × 6

I = 0.5A

Also,

P = VI

P1 = 3×0.5

P1 = 1.5 W

Maximum Resistance= Resistance in series

Rs = R1 + R2

Rs = 24 ohm

By Ohm's Law

V = IR

3 = I × 24

I = 0.125A

Also,

P = VI

P2 = 3 × 0.125

P2 = 0.375 W

P1 / P2 = 1.5/0.375

P1 : P2 = 4 : 1