Electronic Principles
Which one of the following devices is most often used for measuring opposition to current flow in a circuit?

None of these
Ammeter
Voltmeter
Ohmmeter
Wattmeter

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Electronic Principles
The total impedance of a parallel RLC circuit:

is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
is maximum at the resonant frequency
None of these
always decreases as the applied frequency increases
always increases as the applied frequency increases

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Electronic Principles
Molecule is

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

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