Electronic Principles
A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current?

7.8 mA
300 mA
208 mA
None of these
200 mA

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Electronic Principles
Which one of the following statements best applies to a series RLC circuit?

The sum of the current is always less than the applied current
None of these
The current waveform for each component always has the same amplitude and phase as the applied current
The voltage waveform for each component always has the same amplitude and phase as the applied voltage
All of these

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

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

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