Electronic Principles
Current and voltage are said to be in phase when:

None of these
All of these
their waveforms are both ac or both dc
their waveforms cross through zero and reach positive and negative peaks at the same time
they have the same amplitude and frequency

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

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

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Electronic Principles
Which one of the following statements is true for voltage 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 is equal to the sum of the individual voltages in a series circuit
The total voltage in a series circuit is always less than the value of the smallest voltage
The total voltage of a series circuit is equal to the total current divided by the total resistance

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