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Harvey W.

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92
Flow of electrons through a material is called?

Current

True or false? One volt of current flows through a wire when one column flows past a point in one second?

False

The ———— is the unit of electrical current flow?

Ampere

In dc theory textbook, the name of the type of current flow that will be used is called electron current flow?

True

True or false? Two factors that affect the speed of current flow are the type of material and the voltage?

True

The maximum possible speed st which current can travel is?

Speed of light

A circuit that has a break in it preventing the flow of current is called an —————- circuit?

For current flow to occur, there must be ————-?

A short circuit has very little or zero ————?

A type of circuit that would have the highest or maximum current flow is an ———- circuit.

True or false? Voltage is defined as electromotive force, or EMF?

A volt is the amount of potential necessary to cause one coulomb to produce one ——— of work?

True or false? Voltage can flow through a wire or other conductor?

In ohms law calculations, voltage is indicated by the letter ————-?

The letter ——— is used in ohms law calculations to represent current.

The opposition to current flow through a material is called?

True or false? The (half circle) symbol is used to represent the ohm?

In a ———- circuit, the current does not flow through the resistance of the full circuit.

Current flowing through a resistance produces ————?

The ————- is the unit of electrical power.

Power is directly related to the amount of ——— and the amount of current flow.

When a voltage is applied to a circuit and current flows through the load, ———— is consumed.

One horsepower equals?

An atom is composed of a central nuclear surrounded by revolving————-?

True or false? Protons have a negative charge and electrons have a positive charge?

True or false? Each atom will have the same number of protons and electrons?

Electrons revolve around the nucleus in paths called?

The maximum number of electrons that can be contained in any orbit is———?

The atomic particles in the outermost orbit of the atom are called ———— electrons.

True or false? The outer shell (orbit) of an atom is known as the free electron shell?

The valence shell of any atom can hold no more than ———— electrons.

Only ————- in the valence shell are available to participate in electrical current flow.

A material that allows the electrons to flow easily through is called an ————-?

A ———- is generally made from a material that contains one or two valence electrons?

The best natural conductor of electricity is ————?

Copper has ————— valence electrons?

The atomic number for copper is ———-?

Electrical current is the flow of ———-?

True or false? If too much current flows though a conductor, overheating can occur?

Materials that do not provide an easy path for the flow of electrons are called ————?

True or false? Insulators contain seven or eight valance electrons?

Which material is the best insulator?

True or false? Semiconductors are good conductors as well as good insulators.

One characteristic of semiconductors is that as they are heated, their resistance ————-?

True or false? Semiconductors are used in the construction of solid state devices.

Which material is the best semiconductor?

True of false? Electrical current flow is caused by a potential difference between two poles?

A semiconductor has ———- electrons in the valence shell.

True or false? Magnesium is considered a metal because it has two valence electrons.

When a ————— is heated, it’s resistance increases.

The direction of current flow is defined as the ———— of the circuit.

The system of measurement used most often in the United States is referred to as the ————- system?

When referred to metric measurement, the letter SI stand for?

One miles can be converted to how many inches?

Conversions in the metric system involve multiplying or dividing by powers of —————?

True or false? In the SI metric system, the meter is used to measure length.

In the SI metric system, the gram is used to measure ——-?

True or false? In the SI metric system, the kelvin is used to measure volume.

- When the prefix ———— is used, it means multiply the number by 1,

True or false? When the prefix milli is used, it means multiply the number by .001

True or false? A 12,000 volts transformer is often referred to as a 120 kilovolt transformer.

50,000,000 Watts is equal to ————.

200 milliamperes is equal to ————.

A transformer is given a 90 kilovolt impulse test. The voltage applied is ————-.

1,250 volts is equal to how many MV?

17 milliamperes is equal to how many uA?

63.45 megahertz is equal to how many kHz?

The metric prefix for 10^6 is ———?

25 amperes is equal to how many mA?

The prefix for 10^3 is ———-?

True or false? 1x100 is equal to zero?

2,500 is equal to ———-, expresses as a power of 10.

3.45 x10^-3 is equal to?

8x10^3 is equal to?

2.4x10^-6 is equal to?

A small doorbell transformer is rated at 50 volts amperes. This is —————- of a kVa?

Eight heating strips, each drawing 1,500 Watts, use————?

(6x10^6)x(5x10^3)=

One hp is equal to 746 Watts. This is equal to how may kW?

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