Electronic Principles
Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff?

50 Ohm or more
6 Ohm
None of these
5 Ohm
100 Ohm

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Electronic Principles
The south pole of a magnet is the one:

that would be repelled by the north pole of another magnet
None of these
that would be attracted to the earth's south magnetic pole
that has its molecules arranged in a random pattern
that would be attracted to the earths north magnetic pole

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Electronic Principles
A circuit has a Norton current of 10 mA and a Norton resistance of 10 kW. What is the Thevenin circuit?

1000 V and a series resistance of 10 k Ohm
100 V and a parallel resistance of 10 k Ohm
100 V and a series resistance of 10 k Ohm
1000 V and a parallel resistance of 10 kOhm
None of these

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Electronic Principles
Which one of the following statements most accurately describes the nature of inductive reactance?

Inductive reactance is a force that tends to overcome the effects of counter emf
Inductive reactance is an opposition to current flow in ac circuits
Inductive reactance is an opposition to current flow in dc circuits
Inductive reactance is another term for counter emf
None of these

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