Electronic Principles
To get the Norton current, you have to

Short the voltage source
Short the load resistor
None of these
Open the load resistor
Open the voltage source

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Electronic Principles
Which one of the following phrases most accurately describes a purely capacitive circuit?

Combinations of resistance and capacitive reactance provide any opposition to current flow
Resistances provide the only opposition to current flow
The ac voltage leads the current by 90 degree
Capacitive reactance provides the only opposition to current flow
None of these

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Electronic Principles
Which one of the following statements is true for the impedance of a series RC circuit?

None of these
The impedance is greater than either the resistance or capacitive reactance but less than their sum
The impedance is equal to the sum of the resistance and capacitive reactance
The impedance is less than the sum of the resistance and capacitive reactance
The impedance is greater than the sum of the resistance and capacitive reactance

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Electronic Principles
Which one of the following statements most accurately reflects the nature of ac power?

The current in an ac circuit flows in one direction at a steady level
The current in an ac circuit flows in two directions at the same time
The current in an ac circuit changes direction periodically
None of these
The current in an ac circuit flows in one direction, but changes value periodically

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