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Magnetism 2017 Flashcards | StudBud
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Magnetism 2017
Magnetism 2017
30 terms
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magnetism magnets electromagnetic induction electromagnetism
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
Rich & used Faraday's ideas and calculus to derive a four equations describing much of physics
Albert Einstein
Sir Isaac Newton
James Clark Maxwell
Benjamin Franklin
2
If you put a small compass in a magnetic field, the compass will
depends on your definition
align parallel with the magnetic lines
align perpendicular to the magnetic lines
make circles around the lines
3
what is the configuration of the magnet system below
SN-SN
either NS-SN or SN-NS
NS-SN
NS-NS
4
An e
-
with a speed v = 2 x 10
7
m/s through a magnetic field of B = 0.080 T, what is the F
b
F = BIL
F = qVB sin θ
B = 2E-7 (I/r)
F = BIL sin θ
5
what is the cause of all magnetism?
mass
moving charge
charge
energy
6
what happens when you break a magnet?
you get two of the same monopoles
two new magnets each w/ 2 different poles
you get two different mono poles
remove the magnetism
7
what is the charge on the particle
zero
positive
cant say
negative
8
if you want to remove the magnetism from a piece of IRON
heat or hitting it
hit it hard
cut it in pieces
heat it
9
what is the direction of the force on the charged particle
up the page
into the plane
out of the plane
zero has no direction
10
A straight wire causes what kind of magnetic force field lines?
circular & outside wire
circular & inside wire
straight and perpindicular
straight and parallel
11
what is the direction of the force on the charged particle
into the plane
out of the plane
up the page
zero has no direction
12
Was poor and 1st to suggest that invisible fields exist connecting electricity and magnetism
Albert Einstein
Michael Faraday.
Benjamin Franklin
James Clark Maxwell
13
Died in 1955 and work on space time fabric.
Albert Einstein
Benjamin Franklin
Sir Isaac Newton
James Clark Maxwell
14
30 cm wire carries a current of 4.0 A. In a magnetic field of 0.3 T. What is the force on wire
F = qVB sin θ
F = qVB
F = BIL sin θ
B = 2E-7 (I/r)
15
invented "the disk" telescope, calculus, had 4 laws, 1st to say colors make up white light
Newton
Sir Isiah Thomas
Benjamin Franklin
Albert Einstein
16
Wire w/ I = 50A. What is the size of the magnetic field at point P which is 2.5 mm away?
F = BIL sin θ
F = BIL
B = 2E-7 (I/r)
F = qVB sin θ
17
what causes the earths magnetic field?
large deposits of lodestone
convection currents of molten iron
reflection of the moons magnetic field
reflection of sun's magnetic field
18
a magnetic field would cause a force on a
charge
moving charge parallel to
moving charge perpendicular to B
mass
19
the needle of a compos points in the _________ direction to a _________ magnetic pole
south - south
north south
south north
north - north
20
what causes iron to become magnetised
heat
domain names
domains
aligning of domains
21
two stationary protons would experience
Fg & Fb
Fb & Fg
Fe & Fg
Fe & Fb
22
Early American scientist and politician that did ground working study on electricity
Benjamin Franklin
Sir Isaac Newton
James Clark Maxwell
Albert Einstein
23
cosmic rays are
particles
charged particle
light
24
what is the symbol for a magnetic field
F
q
v
B
25
A circular wire (coil) causes what kind of magnetic force field lines?
straight inside coil & parallel to coil
circular outside coil
circular inside coil
straight inside coil & perpendicular to coil
26
what kind of magnetic pole is located at the geographic south pole?
depends on which hemisphere you live in
South pole
North pole
both N &S poles
27
On a magnet, like poles _______ and unlike poles _______
convict/aquit
converge/diverge
repel/attract
attract/repel
28
what kind of magnetic pole is located somewhere in Canada?
both N &S poles
South pole
depends on which hemisphere you live in
North pole
29
the magnetic field is a
vector
scalar
30
The earths magnetic field protects us from
IR light
UV light
gamma rays
cosmic rays
