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

12 mA
10 mA
11 mA
None of these
14 mA

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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
has no effect on ac signals
None of these
passes lower-frequency signals and reduces higher-frequency signals

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Electronic Principles
In a pure inductor:

ac current leads the voltage by 90 degree
ac current is converted to dc voltage
ac current lags the voltage by 90 degree
None of these
ac current and voltage are exactly in phase

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Electronic Principles
When a parallel RLC circuit is operating at its resonant frequency:

inductive reactance is greater than the capacitive reactance
inductive reactance is equal to the capacitive reactance
None of these
capacitive reactance is greater than the inductive reactance
the difference between inductive and capacitive reactance is equal to the resistance

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