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

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Electronic Principles
What is the difference between the kinds of charges for an electron and a proton?

An electron has a positive charge and a proton has a negative charge
An electron has a negative charge and a proton has no charge
None of these
An electron has a positive charge and a proton has no charge
An electron has a negative charge and a proton has a positive charge

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Electronic Principles
Which one of the following statements applies to common auto batteries?

None of these
Auto batteries are primary wet-cell batteries
Auto batteries are secondary dry-cell batteries
Auto batteries are primary dry-cell batteries
Auto batteries are secondary wet-cell batteries

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

None of these
has no effect on the current through the inductors
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
cuts the current through the inductors one-half

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