Find the equivalent resistance between point A and B

Find the equivalent resistance between point $A$ and $B$

Options

A $65Ω$
B $20Ω$
C $5Ω$
D $2Ω$

Correct answer

C. $5Ω$

Step-by-step solution

Find the equivalent resistance between point A and B

Therefore, ${R}_{AB} = \dfrac{\left({R}_{AS} + 5\right) \times 10}{\left({R}_{AS} + 5\right) + 10} = \dfrac{\left(5 + 5\right) \times 10}{\left(5 + 5\right) + 10} = 5Ω$

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