Electronic Principles
A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding?

50 A
20 A
None of these
0.20833333333333

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

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

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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?

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

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