Electronic Principles
Which one of the following phrasers best describes flux density?

None of these
The force that maintains lines of force
The concentration of lines of magnetic force
The rate of change of the number of lines of magnetic force
The opposition to a build-up of magnetic fields

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

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

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Electronic Principles
Molecule is

A atom that has an excessive number of electrons in its outer orbit
A atom that flows whenever there is an imbalance of electrical charges between two points
None of these
The smallest particle of a substance that retains the properties of that substance
A atom that has a shortage of electrons in its outer orbit

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

None of these
The total resistance of a parallel circuit is equal to the total voltage
The total resistance of a parallel circuit is always less than the value of the smallest resistance
The total resistance in a parallel circuit is equal to the average value of the individual resistances
The total resistance is equal to the sum of the individual resistances in a parallel circuit.

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