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

The algebraic sum of voltages in a loop is equal to zero
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 total resistance of a parallel circuit is less than the value of the smallest resistance

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Electronic Principles
Which one of the following phrasers best describes flux density?

The force that maintains lines of force
The concentration of lines of magnetic force
The rate of change of the number of lines of magnetic force
The opposition to a build-up of magnetic fields
None of these

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Electronic Principles
Waveforms are graphs that show:

amplitude on the vertical axis and the passage of time on the horizontal axis
the passage of time on the vertical axis and amplitude on the horizontal axis
frequency on the vertical axis and amplitude on the horizontal axis
amplitude on the vertical axis and frequency on the horizontal axis
None of these

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