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Cards In This Set
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What is the simplest form of matter?
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Element
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In an atom, what electrons contain the most energy?
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Valence Electrons
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Atoms having more than four electrons, but less than eight are known as---
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Insulators
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The electrostatic fields around a positive ion move---
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Outward
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What are the factors that affect the resistance of a material?
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Area, temperature, and type of material
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What is the resistance in a circuit if the power rating is 40 watts and total current is 2 amps?
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10 ohms
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Convert 500 milliamps to standard amperage.
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.5 amps
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In a series-parallel circuit, find RT if series resistor R1 = 7 ohms, and parallel resistors R2 and R3 = 8 ohms.
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11 ohms
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In a series-parallel circuit, the series current at I1 = 9 amps; in the two parallel branches, I2 = 5 amps; and the value of I3 is not listed. Use Ohm’s Law to find the value of I3 and IT.
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I3 = 4 amps and IT = 9 amps
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What is the difference between and open and a short?
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No current flow in an open circuit; excessive current flow in a shorted component.
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Voltage induced into a conductor by the expanding and collapsing of a magnetic field is---
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Electromagnetic induction
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In an inductor, what happens to the magnetic lines of force if the diameter of the core is increased in size?
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Induction of the coil increases.
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What is the basic principle of operation for transformers?
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Mutual Induction.
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What type of transformer contains more turns in the primary winding than in the secondary winding?
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Step down
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If the size of the plates of a capacitor is increased, how is capacitance affected?
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Capacitance increases
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