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Conductivity and Resistivity

The equivalen...

Question

The equivalent resistance between points A and B with switch S open and closed are respectively:

A

4 Ω, 8 Ω

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B

8 Ω, 4 Ω

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C

6 Ω, 9 Ω

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D

9 Ω, 6 Ω

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Solution

The correct option is B $8 Ω, 4 Ω$
For S open:

For S closed:

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