Electronic Principles
Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance?

P = IE
None of these
P = E2/R
I = P/E
P = I2R

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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
always decreases as the applied frequency increases
always increases as the applied frequency increases
None of these

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

None of these
The voltage always has the same amplitude and phase for every part of the circuit
The total voltage lags the total current by less than 90
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

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Electronic Principles
What is a free electron?

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

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