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

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

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Electronic Principles
Which one of the following statements most accurately describes the nature of inductive reactance?

Inductive reactance is another term for counter emf
Inductive reactance is a force that tends to overcome the effects of counter emf
Inductive reactance is an opposition to current flow in ac circuits
Inductive reactance is an opposition to current flow in dc circuits
None of these

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Electronic Principles
A farad is defined as the amount of capacitance necessary for:

storing 1 V for 1 second
None of these
dissipating 1 W of power
changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing
causing an ac phase shift greater than 90 degree

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