Electronic Principles
Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it?

I = E/R
I = ER
None of these
E = I2R
E = PR

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Electronic Principles
A low-pass filter:

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

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Electronic Principles
A high-pass filter:

has no effect on ac signals
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

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Electronic Principles
The total impedance of a parallel RLC circuit:

is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
always increases as the applied frequency increases
is maximum at the resonant frequency
always decreases as the applied frequency increases
None of these

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