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WorksheetsParticle in Magnetic Field EMSAT
Total questions: 15
Worksheet time: 12mins
The coils of wire on an electromagnet are usually wound on ferrous core.
Which of the following statement is incorrect of magnetic material.
Ferrous material for example iron does not retain its magnetism when no current flows.
Ferrous material concentrates the magnetic flux thus increasing the magnetic field strength greatly.
Steel use in electromagnet becomes a permanent magnet.
Copper and aluminium are other examples of ferrous materials.
An ion of mass m and charge q enters a region of uniform magnetic field acting perpendicularly to the original line of flight. The resulting path is
circular and of radius proportional to q/m
linear and perpendicular to the original path
circular and of radius proportional to m/q
curved with a displacement from the original line of flight proportional to m/q
The area around a magnet is called the .....
attraction zone
work area
magnetic field
hot zone
How is Earth's magnetic field similar to that of a magnet?
It's shaped like a horseshoe.
It has north and south poles.
It is made plastic.
It is hundreds of miles long.
Why does a compass needle point north?
Because it is being attracted to the Magnetic South Pole
Because north is up
Because it is being attracted to the Magnetic North Pole
Because north is down
An electron is travelling in a region of uniform magnetic field. At the instant shown, the electron is moving parallel to the field direction.
The magnetic force on the electron is _______
M14/4/PHYSI/SPM/ENG/TZ2/XX no. 19
upwards.
downwards.
to the right.
zero.
What does the following represent?
⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗
⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗
⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗
Multiplied by a billion
A piece of modern art
Uniform magnetic field directed into the screen away from you
Uniform magnetic field directed out of your screen at you
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
A charged particle is injected into a uniform magnetic field such that its velocity vector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will ____:
move in a straight line
follow a spiral path
move along a parabolic path
move along a waveform
follow a circular path
Four small particles are seen moving through an area with the magnetic field going out of the page. Which of the following statements is consistent with the diagram?
All the particles are positively charges but have different mass
All the particles have same mass, but different charges
Two particles are positive while one is negative
Two particles are negative while one is positive
You can only ascertain that all are charged
An electron travels due north through a vacuum in a region of uniform magnetic field
be unaffected by the field
speed up
slow down
follow a right-handed corkscrew path
The magnetic field B inside a long ideal solenoid is independent of:
the current
the core material
the spacing of the windings
the cross-sectional area of the solenoid
