unit D - section 1.0 Flashcards

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1
Q

what is static electricity?

A

a stationary electric charge, which is the process of you becoming part of a short circuit and becoming neutralized

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2
Q

What is a proton?

A

positively charged particle of an atom

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3
Q

What is an electron?

A

negatively charged which orbits the nucleus of an atom

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4
Q

What is a charge separation?

A

like charges are in separate areas of a neutral object.

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5
Q

What is the electrical law?

A

charges of an atom either form attractive or repelled forces,
like charges will repel
unlike charges will attract

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6
Q

what is electrical discharge?

A

transfer of electrical charge going from one object to another.

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7
Q

what is electrical current?

A

particles moving in a steady and continuous flow, which can power electrical devices.
can only flow if there is an energy source like a plug/fuse
and has to have a complete path or circuit

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8
Q

what is circuit?

A

a completed path that allows charged particles to go through.

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9
Q

What is an ampere?

A

the unit shown of electrical current?

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10
Q

What is a conductor?

A

a material in which electric charge can easily move through

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11
Q

what is electrical energy?

A

energy of charged particles that are transferred when electrons travel

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12
Q

what is voltage?

A

it shows how much electrical energy a charged particle carries.

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13
Q

what is potential difference?

A

change in the potential energy at a reference point.

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14
Q

What is volt?

A

the unit of voltage.

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15
Q

what is load?

A

turns one form of energy into another.

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16
Q

what is a voltmeter?

A

instrument which measures potential difference in volts.

17
Q

what is a short circuit?

A

accidental path made for extra current flow to flow through.

18
Q

what are insulators?

A

strongly resists the flow of electricity

19
Q

what are fuses?

A

breaks an electrical circuit when excess current flows through.

20
Q

what is a circuit breaker?

A

wire that heats up which causes the switch to turn off when excess current flows through

21
Q

what is an electro-chemical cell

A

package of chemicals to produce small amounts of electricity it produces electricity from chemical reaction.

22
Q

what is a dry cell?

A

a cell in which the electrolytes are in a form of a paste,which is in a sealed case.

23
Q

what are the 2 parts of a cell?

A

the electrolytes react with with 2 metals called electrodes,

24
Q

what is an electrolyte?

A

paste that conducts electricity due to the ions

25
Q

what is an electrode?

A

conductor which electric current enters or leaves

26
Q

what is a primary cell?

A

cell that produces electricity which a chemical reaction cannot be reversed

27
Q

what is a rechargeable cell?

A

cell that produces electricity in which chemical reaction can be reversed

28
Q

what is electrochemistry?

A

study of chemical reactions involving electricity

29
Q

what is electrolysis?

A

decomposition of a substance by an electric current