Electronic Principles
What is one important thing transistors do?

Emit light
Regulate voltage
Rectify line voltage
None of these
Amplify weak signals

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

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

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

The amount of current flow through each part of a series circuit can be different, depending on the resistance of each part and the amount of voltage applied to it
The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit
None of these
The total current in a series circuit is equal to the total voltage multiplied by the total resistance
The same current flows through every part of a series circuit

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