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

10 mA
None of these
14 mA
12 mA
11 mA

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Electronic Principles
A high-pass filter:

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

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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
None of these
The total current is equal to the sum of the currents for the resistance and capacitance

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