Question

Two resistances 1 ohm and 2 ohm are connected in series and then in parallel the ratio of effective resistance of series and parallel combination of resistances is

Answer 1

I think it’s correct and it helps u

Answer 2

Answer:

series connection = 3 ohm

parallel connection =  $\frac{2}{3}$ ohm

Explanation:

There are two resistance

R1 = 1 ohm and

R2 = 2 ohm

• For series connection

R = R1 + R2

R = 1ohm + 2 ohm

R = 3 ohm

• For parallel connection

$\frac{1}{R}$ = $\frac{1}{R1}$+$\frac{1}{R2}$

$\frac{1}{R}$ = $\frac{1}{1}$+$\frac{1}{2}$

$\frac{1}{R}$ = $\frac{3}{2}$

R= $\frac{2}{3}$