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Vocabulary Difficult Flashcards

(13 cards)

0
Q

Induced charged separation

A

A shift in the position of electrons in a neutral object that occurs when a charged object is brought near it

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1
Q

Electric force

A

The force exerted by an object with an electric charge; can be a force of attraction or a force of repulsion

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2
Q

Electrical energy

A

The energy provided by the flow of electrons in an electric circuit

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3
Q

Electric cell

A

A device that converts chemical energy into electrical energy

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4
Q

Primary cell

A

An electric cell that may only Be used once

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5
Q

Secondary cell

A

An electric cell that can be recharged

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6
Q

Chemical cell

A

Creates voltage or potential difference. Chemical energy is converted in electrical energy. A chemical reaction takes place between electrodes and electrolytes.

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7
Q

Direct current

A

A flow of electrons that in one direction through an electric circuit

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8
Q

Alternating Current (AC)

A

A flow of electrons that alternates in direction in an electric circuit

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9
Q

Static electricity

A

A build up of electrons that do not move freely. There is an unequal number of positive and negative charges. At the atomic level, the proton and the nucleus have a positive charge and the electron have a negative charge. Opposite charges attract each other. Like charges repel each other.

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10
Q

Photovoltaic cell

A

A device that converts light energy from any light source directly into electrical energy

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11
Q

Electrical power

A

The rate at which electrical energy is produced or used

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12
Q

Efficiency

A

Comparison of the energy output of a device with the energy supplied

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