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

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

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Electronic Principles
What is a free electron?

None of these
An electron that has been freed from its parent atom
An electron that has no electrical charge
An electron that has twice the amount of charge of a normal electron
An electron that costs nothing

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