Elec Theory Flashcards

0
Q

Most insulators are

A

Compounds of two or more elements

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1
Q

The electrons found in the outermost orbit of the atom are known as

A

Valance electrons

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2
Q

Voltage is?

A

A force or pressure

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3
Q

Which form of voltage source requires polarity markings?

A

Direct voltage

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4
Q

Resistance of a conductor is determined by?

A

Length, cross-sectional area, temperature and type of material

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5
Q

What is Coulomb’s law

A

Opposites attract like charges repel

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6
Q

AC stands for ?

A

Alternating current

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7
Q

Moving wire through a magnetic field creates?

A

Induced voltage

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8
Q

North American standard frequency is?

A

60 hz

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9
Q

In voltage like most things a difference of ______ is required in order for current to work

A

Pressure

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10
Q

Amperage is

A

The amount of electron flow

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11
Q

One ampere is equal too?

A
  1. 28x10 to the 18 power

6. 28 billion billion

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12
Q

Conventional theory states the direction of current is

A

+ > -

Positive to negative

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13
Q

Length of wire changes the resistance
A)true
B)false

A

True the longer the wire the more resistance it will have

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14
Q

Thermosister sends?

A

Thermosister sends resistance depending on the heat or coldness of the metal of the Thermosister

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15
Q

Malt stands for

A
Material
Area
Length
Temperature    
Used to determine resistance
16
Q

If a resistor in a circuit is shorted, a ammeter in the circuit would indicate

A

More current than normal

17
Q

Reduced current flow in a series circuit can be caused by:

A

Corroded terminals on the battery