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Understanding Basics of Electricity and Electronics > Current Electricity > Flashcards

Current Electricity Flashcards

1
Q

Electricity in motion

A

Current electricity

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2
Q

A measure of the ability to do work

A

Energy

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3
Q

Device for making electricity by chemical means

A

Cell

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4
Q

Two or more cells cells connected together

A

Battery

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5
Q

Negative plate in a cell

A

Cathode

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6
Q

Positive plate in a cell

A

Anode

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7
Q

Cell that cannot be charged

A

Primary cell

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8
Q

A cell that can be recharged

A

Secondary cell

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9
Q

Two different metals welded together that produces electricity when heated

A

Thermocouple

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10
Q

Several thermocouples connected in a series

A

Thermopile

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11
Q

A device that produces a potential difference when it receives light

A

Photoelectric device

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12
Q

Crystal that produces a potential difference as it is deformed

A

Piezoelectric crystal

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13
Q

The basic device for making electricity by chemical action is the

A

Electrochemical cell

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14
Q

The electrolyte in a dry cell is

A

Paste

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15
Q

To increase both the potential difference and the current capacity, cells can be connected in a _______ to make groups, and the groups can be connected in ________.

A

Series

Parallel

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16
Q

A lead-acid battery can _______ during recharging, because it produces a flammable gas inside.

A

Explode

17
Q

Most of the electricity in use every day is produced by ______ and used by ______.

A

Generators

Motors

18
Q

How does the resistance of a photoconductive cell change as the amount of light increases?

A

It decreases

19
Q

Piezoelectric quartz crystals are widely used in devices that must operate at precisely-controlled _________.

A

Frequencies

20
Q

If the positive electrode of one cell is connected to the negative electrode of the next, the cells are connected in

A

Series

21
Q

Motors and generators take advantage of the close relationship between

A

Electricity and magnetism

Understanding Basics of Electricity and Electronics (7 decks)

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