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Earlier discussion
3 older comments kept for context.
Divine Favour okafor
Formulae resistance in parallel
= 1/R = 1/R1 +1/R2
1/R = 1/2 +1/2 = 1
Resistance are now in series
R = 1 + 3 + 4
= 8 ohms
Oluwaseun Adeyemi
For resistances in parallel:
\(\cfrac{1}{\text{R}} = \cfrac{1}{2\Omega} + \cfrac{1}{2\Omega} = 1\Omega\)
\(\text{R} = 1\Omega\)
All resistances are now in series.
Resultant resistance = \(3\Omega + 1\Omega + 4\Omega = 8\Omega\)
Chibuikem Iheukwumere
But according to the image 2 and 2 are in series while 3 and 4 are in parallel