Question

Power dissipated across resistor X with explanation .... as fast as possible... answer it from the 4 options given in the pic....

Answer 1

3 Ohms + 3 Ohms = 6 Ohms  

3 Ohms + 3 Ohms = 6 Ohms  

The fifth resistor is parallel with the  

two 6 Ohms series combinations.  

1/Re = 1/6+1/6+1/3 =1/6+1/6+2/6 = 4/6  

1/Re = 2/3  

Re = 1.5  

Total current = 1.5V/1.5Ohms = 1 Ampere  

.5 Amperes through 6 Ohms parallel 6 Ohms  

.5 Amperes through 3 Ohms  

Each 6 Ohm series combination carries .25 Amperes.  

Power = I²×R = (.25)²×3 = .1875 Watts  

(Answer: (2) 0.187 W)

Answer 2

Answer:

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