Electronic Principles
Two diodes are in series. The first diode has a voltage of 0.75 V and the second has a voltage of 0.8 V. If the current through the first diode is 500 mA, what is the current through the second diode

11 mA
12 mA
None of these
14 mA
10 mA

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Electronic Principles
Which one of the following statements is true for the currents in a series RC circuit?

The total current is greater than the sum of the currents for the resistance and capacitance
The total current is less than the sum of the currents for the resistance and capacitance
The current always has the same amplitude and phase for every part of the circuit
The total current is equal to the sum of the currents for the resistance and capacitance
None of these

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Electronic Principles
A farad is defined as the amount of capacitance necessary for:

None of these
causing an ac phase shift greater than 90 degree
storing 1 V for 1 second
changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing
dissipating 1 W of power

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Electronic Principles
A low-pass filter:

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

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Electronic Principles
The total inductance of a series inductor circuit is:

None of these
equal to the sum of the individual inductance values
equal to the sum of the individual inductive-reactance values
equal to the source voltage divided by total current
less than the value of the smallest inductor

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