You are handed a black box containing a circuit with two terminals marked a and b. With nothing else connected across the terminals, you measure the voltage across terminals a and b to be 15 volts. When you connect a resistor across the terminals, the external resistor draws 90 watts and the terminal voltage drops to 12 volts. It is desired to find the Thevenin equivalent of the black box circuit across its terminals a and b, without the external resistor. What is the Thevenin voltage, thevenin resistance, and the resistance of the external resistor?

You are handed a black box containing a circuit with two terminals marked a and b. With nothing else connected across the terminals, you measure the voltage across terminals a and b to be 15 volts. When you connect a resistor across the terminals, the external resistor draws 90 watts and the terminal voltage drops to 12 volts. It is desired to find the Thevenin equivalent of the black box circuit across its terminals a and b, without the external resistor. What is the Thevenin voltage, thevenin resistance, and the resistance of the external resistor?

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter27: Service-entrance Equipment

Section: Chapter Questions

Problem 40R

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