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In the figure the value of R is - JAMB Physics 2020 Question

In the figure, the value of R is 

A

3\(\Omega\)

B

6\(\Omega\)

C

4\(\Omega\)

D

5\(\Omega\)

correct option: b

R\(_T\) = \(\frac{V}{1} = \frac{12}{2}\) = 6\(\Omega\) 

R\(_T\) = 3 + \(\frac{R \times 6}{R + 6}\) 

R = 6\(\Omega\) 

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