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WorksheetsP6 electromagnetism revision
Total questions: 25
Worksheet time: 1hrs 19mins
This picture best illustrates the construction of a(n)
magnet
electromagnet
series circuit
parallel circuit
What is magnetic force?
A force exerted by electrically charged particles
A force exerted by magnets that can be felt by objects near a magnet
A force exerted by magnets that makes an object become electrically charged
A force exerted by a magnet only when it physically touches an object
Which of the following is not a good conductor?
Copper
Silver
Aluminium
Plastic
Particles with opposite charges ____________ and particles with same (or like) charges ____________.
attract, repel
repel, repel
attract, attract
repel, attract
The picture above is an example of what?
Magnetic field
Electric field
Repulsion
Attraction
What would happen with the magnets in the picture above?
They would repel
Nothing
They would attract
They would repel and then attract
If the north pole of a magnet is brought close to the south pole of another magnet, what will happen?
They will atrract each other
They will repel each other
They will demagnitize
The south pole will turn around so the north pole is facing the other magnet.
Which sides of the magnet attract each other?
A) North and North Pole
B) South and South Pole
C) The North and South Pole
D) A and B
E) A, B,C
Thumb and first finger represent .......
magnetic field, force
force, current
force, magnetic field
current, force
The current in the green wire flows from the left to the right.
What magnetic field flows perpendicular upwards (towards sky)
What direction does the current flow?
Up
Down
Into the page
Out of the page
What direction does the wire move?
Up
Down
Left
Right
What direction would the wire move?
Up
Down
Left
Right
What direction would the wire move? (What direction does the force act?)
Up
Down
Left
Right
What angle must there be between a magnetic field and a conductor in order for the maximum force to be exerted?
180
45
90
270
Why might a current-carrying wire be placed between a magnetic field?
To increase the current from the interaction of magnetic fields
To increase the voltage from the interaction of magnetic fields
To produce a force from the interaction of magnetic fields
What direction is the force/motion in the following diagram?
Perpendicular to the magnets
Downwards
Parallel and through the magnets
How does a split ring commutator work?
Swaps the contact evert full turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.
Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil do not experience a force in the same direction.
Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.
