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A solid state device that allows electrical energy to flow through in only one direction is called a(n) ____________________.

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Copper wire sizes are measured in circular mils.

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A transformer has 10,000 turns of wire in the secondary and 100 turns in the primary. The transformer is connected to a line voltage of 120 V. The output voltage will be ____________________ volts.

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12,000,120...

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What type of charge does an electron have?


A) Positive.
B) Negative.
C) Neutral.
D) Negative-positive.

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How can a magnetic field around an iron core be generated ?

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Wrap wire ...

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When calculating the total resistance of a parallel circuit, the result will always be lower than the lowest resistance.

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A heat sink is a device to improve the purity of the electrons in an electrical circuit.

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Typical insulators are: ____.


A) copper, silver, gold
B) steel, bronze, brass
C) glass, rubber, plastic
D) aluminum, nickel, magnesium

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Describe a thermistor.

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A thermistor is a re...

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If two electrical loads are connected in parallel with each other and each load draws 6 A, what is the total current of the circuit ?

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A PTC thermistor causes the resistance of the thermistor to increase when its temperature rises.

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The unit of measurement for the charge a capacitor can store is called a Joule.

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A single diode can be connected as a full wave rectifier.

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As the diameter of a wire increases, its resistance will also increase.

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If two light bulbs are wired in series and one bulb burns out, the other bulb will ____.


A) go out
B) stay on
C) stay on, but it will be dimmer
D) stay on, but it will be brighter

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The ampere is ____.


A) the difference in potential between two charges
B) a measure of the quantity of electrons flowing past a point in the electrical circuit in a given time
C) the unit of measure for resistance
D) the unit of measure for capacitance

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The unit of measure for resistance is the ____________________.

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One kilowatt of electrical energy is equal to 1,000,000 watts.

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If a conductor carrying electrical current is formed into a coil, the strength of the magnetic field generated by the wire will increase.

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If five electrons combine with three protons, the net charge will be ____.


A) negative
B) positive
C) zero
D) neutral

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Showing 21 - 40 of 46

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