Electronic Principles
The rise time of a pulse waveform is the time required for the voltage to rise:

from zero to its peak value
from 10% of the peak value to 70.7% of the peak value
None of these
from zero to its rms value
from 10% of the peak value to 90% of the peak value

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

The total voltage is equal to the sum of the individual voltages in a series circuit
The total voltage in a series circuit is equal to the average value of the individual voltages
None of these
The total voltage of a series circuit is equal to the total current divided by the total resistance
The total voltage in a series circuit is always less than the value of the smallest voltage

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