Electronic Principles
A high-pass filter:

passes higher-frequency signals and reduces lower-frequency signals
increases the level of all frequencies by a significant amount
passes lower-frequency signals and reduces higher-frequency signals
None of these
has no effect on ac signals

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

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
The algebraic sum of voltages in a loop is equal to zero
The total resistance of a parallel circuit is less than the value of the smallest resistance
None of these

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Electronic Principles
Voltage is

Trie force that causes electrons to flow
None of these
The smallest electrically charged particle
The flow of charged particles through a material
The number of free electrons in an atom

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