Question

show how would you join three resistors , each of resistance 9 ohm so that the equivalent resistance of the combination is (i)13.5ohm (ii)6ohm?

Answer 1

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Answer 2

hey dear...here is ur ans..
(i) u will join two resistors in parallel and one in series for 13.5

(ii) Connect two resistors in series and one in parallel for 6 ohm

explanation :- when u connect in series
R1+R2 = 18
Now,
1/Rp = 1/R1 + 1/R2
1/Rp = 1/18 + 1/9
1/Rp = 1+2/18
1/Rp = 3/18
Rp = 18/3
Rp = 6. ans..

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