Electronic Principles
A typical light switch in your home is a:

None of these
rotary switch
knife switch
momentary push button switch
toggle switch

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Electronic Principles
Which one of the following statements is true for the currents in a parallel RL circuit?

The total current is equal to the sum of the currents through the resistance and inductance
None of these
The current always has the same amplitude and phase for every part of the circuit
The total current leads the total voltage by less than 90
The total current is less than the sum of the currents through the resistance and inductance

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Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

None of these
The voltage causes current to flow in two directions at the same time
The voltage remains at one polarity but changes value periodically
The voltage reverses polarity periodically
The voltage remains at one polarity and at a steady level

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