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Problem 1
Two measurements are made on the same "linear mystery circuit" as shown. What would be the measured current Im if the 50-ohm resistor is replaced by a short circuit? |
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DC Circuits >
Thèvenin Equivalents >
Black Box Terminal Behavior
Keywords:
Length: 3:40
Date Added: 2007-05-23 20:24:04
Filename: thev_box_ex1
ID: 83
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Problem 2
When the variable load resistance Rl is 1 kΩ the measured voltage Vm is 30 volts. When Rt is lowered to 10Ω the voltage drops to 3 volts. What would you expect Vm to be when the load resistance is removed? |
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DC Circuits >
Thèvenin Equivalents >
Black Box Terminal Behavior
Keywords:
Length: 4:06
Date Added: 2006-08-29 13:31:28
Filename: thev_box_ex2
ID: 84
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Problem 3
Consider the following experimental method to measure the Thèvenin resistance of a linear circuit: (1) With the pushbutton open, measure and record Vm, (2) press the pushbutton and adjust Rvar until Vm is half the original voltage, and (3) release the pushbutton and measure Rvar. Explain why the measured resistance Rvar is actually the same as the Thèvenin resistance Rt. |
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DC Circuits >
Thèvenin Equivalents >
Black Box Terminal Behavior
Keywords:
Length: 5:12
Date Added: 2007-05-23 20:24:04
Filename: thev_box_ex3
ID: 87
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