A 9.0 Ω resistor and a 6.0Ω resistor are connected in series with a power supply. The voltage drop across the 6.0-f resistor is measured to be 12 V.
a. Find the voltage output of the power supply.
b. The two resistors are connected in parallel across a power supply, and the current through the 9.0Ω resistor is found to be 0.25 A. Find the voltage setting of the power supply.
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Answer:
a)30 V b)2.25 V
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