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The equivalent resistance between 7 ohm and 8 ohm is
R = 7 ohm + 8 phm
= 15 ohm
Again, the equivalent resistance in the circuit is
1 / Re = 1 / 6 ohm + 1/ 15 ohm
Re = 4.28 ohm
Now, the current flows through the circuit is
I = V / Re
= 2 V / 4.28 ohm
= 0.467 A
Now, potentential diffrence between 7 ohm and 8 ohm is 2 V.
Thus, the current that fllows through 7 ohm and 8 ohm is
I'15 = V / Re
= 2 V / 15 ohm
= 0.133 A
Thus, the voltage across 8 ohm is
V8 = I15 (8 ohm)
= (0.133 A) (8 ohm)
= 1.064 V
Therefore, the voltage across 8 ohm is 1.064 V.
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