Electronic Principles
Which one of the following is a direct statement of Ohm's law?

The total resistance of a parallel circuit is less than the value of the smallest resistance
The algebraic sum of currents entering and leaving a point is equal to zero
The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
None of these
The algebraic sum of voltages in a loop is equal to zero

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Electronic Principles
Which one of the following statements most accurately applies to the frequency of a waveform?

The actual frequency of a sine waveform is 1.41 times the working frequency
Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz
None of these
The longer the period of a waveform, the lower its frequency
The higher the amplitude of a waveform, the higher its frequency

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Electronic Principles
For a pure capacitor:

ac current and voltage are exactly in phase
ac current leads the voltage by 90 degree
ac current lags the voltage by 90 degree
None of these
ac current is converted to dc voltage

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