Question

Please answer the 12th question.........

Answer 1

Answer:

This is a case of balanced WHEATSTONE BRIDGE.

As a result of this balanced WHEATSTONE BRIDGE, the middle 9 ohm resistance will not be considered.

Just remove the 9 ohm and the circuit will be simplified.

Therefore equivalent resistance is

(3*6)/(3+6) = 2 ohm. [ Parallel combinations].

b)when connected in series, R1 will be equal to nR.

when in parallel R2 will be R/n

therefore R1/R2 = n^2.

Hope you will be able to understand.

Answer 2

Explanation:

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