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Electronic Principles

Electronic Principles
Suppose the voltage from a power outlet is 120 Vrms. What is the peak voltage?

170 V
100 V
180 V
120 V
None of these

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

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Electronic Principles
If a load resistance is 1 kW, a stiff current source has a resistance of

None of these
Less than 100 k Ohm
At least 10 Ohm
More than 100 k Ohm
Less than 10 Ohm

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Electronic Principles
When operating below its resonant frequency, a parallel RLC circuit has the characteristics of a:

None of these
parallel RLC circuit operated above its resonant frequency
parallel RL circuit
purely resistive circuit
parallel RC circuit

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Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W?

89.3 ohm
None of these
77.7 ohm
88.8 ohm
224 ohm

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Electronic Principles
What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it?

122 W
6 W
3 W
None of these
64 W

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