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Consider the circuit shown in the figure. Determine (a) the current in the 40 Ohm resistor on the right, (b) the power in the voltage source, and (c) the power in the 8 Ohm resistor. Knowing that the value of R = 0 Ohm.

10 Ω
20 2
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8Ω
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12 V
20 Ω
40 Ω
40 Ω
R
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