In the above circuit, the series combination of 300 ohm and 200 ohm resistor is connected to a wire at both its terminals. Thus, if a current arrives at the junction, it is always going to take the path with the least resistance. Since the wire has zero resistance ideally, no current would flow cross the highlighted 500 ohm resistor. Therefore, we can disregard this resistor in our calculation. 300 300 A 650 500 650 || 500 B Finally, the Thevenin equivalent resistance Rth is given by [(650||500) + 300]. Thevenin's equivalent voltage Vth: 2502 3002 A1 4002 5002 20V 3002 10V 2002 В B1 Since the 300 ohm resistor is open at one end, no current flows through it. Thus, the voltage at A and B is the same as A1 and B1. Voltage between A1 and B1 = (Voltage between A1 and C) + (Voltage between C and B1). The Voltage between C and B1 is 10V as it is directly connected to a 10V source. Apply mesh law in loop with i, to find voltage across 500 ohm resistor. Vso0 = 500 * i Substitute values in highlighted equation to find Vth across A and B.
In the above circuit, the series combination of 300 ohm and 200 ohm resistor is connected to a wire at both its terminals. Thus, if a current arrives at the junction, it is always going to take the path with the least resistance. Since the wire has zero resistance ideally, no current would flow cross the highlighted 500 ohm resistor. Therefore, we can disregard this resistor in our calculation. 300 300 A 650 500 650 || 500 B Finally, the Thevenin equivalent resistance Rth is given by [(650||500) + 300]. Thevenin's equivalent voltage Vth: 2502 3002 A1 4002 5002 20V 3002 10V 2002 В B1 Since the 300 ohm resistor is open at one end, no current flows through it. Thus, the voltage at A and B is the same as A1 and B1. Voltage between A1 and B1 = (Voltage between A1 and C) + (Voltage between C and B1). The Voltage between C and B1 is 10V as it is directly connected to a 10V source. Apply mesh law in loop with i, to find voltage across 500 ohm resistor. Vso0 = 500 * i Substitute values in highlighted equation to find Vth across A and B.
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter2: Electrical Quantities And Ohm’s Law
Section: Chapter Questions
Problem 1PA: You are an electrician on the job. The electrical blueprint shows that eight 500-W lamps are to be...
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