Electronic Principles
Current is

An imbalance of electrical charges
The flow of charged particles through a material
The force that causes electrons to flow
None of these
The number of free electrons in an atom

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Electronic Principles
Which one of the following is a statement of KirchhofFs voltage law?

None of these
The algebraic sum of voltages in a loop is equal to zero
The algebraic sum of voltages entering and leaving a point is equal to zero
The total voltage in a parallel circuit is less than the value of the smallest voltage
The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it

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Electronic Principles
When applying a square waveform to a capacitor, the circuit tends to:

peak the current and round off the voltage waveforms
peak both the voltage and current waveforms
peak the voltage and round off the current waveforms
round off both the voltage and current waveforms
None of these

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Electronic Principles
In a pure inductor:

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

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