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Each of three resistors connected in a circuit as shown has a resistance of 2\Omega and can dissipate a maximum of 18 W without becoming excessively heated. The maximum power that the circuit can dissipate is

Option: 1

54 W


Option: 2

36 W
 


Option: 3

8 W


Option: 4

27 W


Answers (1)

best_answer

The maximum current i that each 2 \Omega can carry without being excessively heated is given by

\mathrm{i}^2(2)=18 \text { or } i=3 a m p .Hence the maximum 

current distribution can be as shown .

Hence maximum power that will be dissipated

P=(1.5)^2 \times 2 v+(1.5)^2 \times 2+(3)^2 \times 2

=9+18=27 \mathrm{~W}

Posted by

vishal kumar

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