Question

R1= 3ohm R2= 3ohm r3= 3ohm r4= 3ohm r5= 3ohm

Answer 1

Explanation:

• R2 and R3 are in series then their equivalent is in parallel with R4.
• And then Equivalent of that is in series with R1 and R5.

$Ra = R2 + R3$

$Ra \: = 3 + 3$

$Ra = 6 \: ohm$

• Now this is in parallel with R4

$\frac{1}{Rb} = \frac{1}{Ra} + \frac{1}{R4}$

$\frac{1}{Rb} = \frac{1}{6} + \frac{1}{3}$

$\frac{1}{Rb} = \frac{1 + 2}{6}$

$\frac{1}{Rb} = \frac{3}{6}$

$Rb = 2 \: ohm$

• Now this is in series with R1 and R5

$Req = R1 + Rb + R5$

$Req = 3 + 2 + 3$

$Req = 8 \: ohm$