Electronic Principles
What is one important thing transistors do?

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

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Electronic Principles
Doubling the operating frequency of a purely inductive circuit:

cuts the current through the inductors one-half
None of these
increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit
doubles the amount of current through the inductors
has no effect on the current through the inductors

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