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SCI Q3 > ELECTRICITY AND MAGNETISM > Flashcards

ELECTRICITY AND MAGNETISM Flashcards

1
Q

A danish scientist and chemist

A

Hans Christian Oersted

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2
Q

he accidentally discovered that an electric current can produce a magnetic field

A

Hans Christian Oersted

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3
Q

Physicists that discovered that electric fields can produce a magnetic field

A

Joseph Henry & Michael Faraday

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4
Q

A process where changing magnetic field can produce electric current

A

Electromagnetic induction

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5
Q

2 products of electromagnetic induction

A

induce current, induce electromotive force (emf)

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6
Q

Flow of electric charges in a given material

A

Electricity

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7
Q

Attraction of electron

A

Current

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8
Q

occurs when there is flow of charges

A

Current

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9
Q

Dynamic duo

A

Electricity, magnetism

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10
Q

Dynamic duo means:

A

When there is electric current, there is a magnetic field

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11
Q

They remain changing

A

Dynamic duo

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12
Q

Attraction and repulsion

A

Magnetism

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13
Q

Did Joseph Henry and Michael Faraday work independently?

A

Yes

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14
Q

Faraday’s law:

A

Whenever there is change in the magnetic flux in a circuit, an induced current will be produced

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15
Q

Lenz’s law

A

States that induced current flowing direction so as to oppose the charge causing it

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16
Q

Number of lines of forces

A

Magnetic flux

17
Q

area where we can find the magnet and forces

A

Magnetic field

18
Q

Force that is produced by magnet

A

Magnetic flux

19
Q

Unit of magnetic flux

A

Weber (Wb)

20
Q

Flux per unit area of loop of wire is perpendicular to the field

A

Magnetic field intensity

21
Q

Magnetic field intensity unit

A

Tesle (T)

22
Q

It converts mechanical energy to electrical energy

A

Generator

23
Q

Sometimes called alternator because it alternated current

A

Generator

24
Q

French scientist that was cited for having the first electric generator in 1832

A

Hippolyte Pixii

25
Q

2 types of generators

A

AC generator, DC generator

26
Q

It allows the shift or exchanging of mechanicak and electrical from the movement of nagnetic field

A

Magnet

27
Q

It holds the armature in place

A

Slip ring

28
Q

It conducts electrical current

A

Carbon brush

29
Q

Ring broken into 2 halves insulated from each other

A

commutator

30
Q

AC meaning

A

Alternating current

31
Q

DC meaning

A

Direct current

32
Q

Produces mechanical energy from electrical energy

A

Motor

33
Q

2 types of motor

A

DC and AC notor

34
Q

Permanent magnets that are stationary

A

Stators

35
Q

He invented the first AC motor

A

Nikola Tesla

SCI Q3 (5 decks)

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