Magnetism II - SS3 Physics Past Questions and Answers - page 1
1
Which of the following devices uses electromagnetism to function?
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A
Camera
B
Mobile phone
C
Compass
D
Calculator
2
Which of the following is a key component of electric motors?
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A
Capacitor
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B
Resistor
C
Inductor
D
Diode
3
Which of the following is an application of electromagnetism in medicine?
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A
X-ray machines
B
Laser surgery
C
Magnetic resonance imaging (MRI)
D
Ultrasound machines
4
Which of the following is an application of electromagnetism in transportation?
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A
Aeroplanes
B
Cars
C
Trains
D
Bicycles
5
Which of the following is an application of electromagnetism in data storage?
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A
CDs
B
Hard drives
C
Floppy disks
D
USB drives
6
Explain the application of magnetism to transportation technology
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7
How has the knowledge of magnetism impacted medical technology
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8
What is Faraday's law of electromagnetic induction?
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A
The induced emf in a closed loop is proportional to the rate of change of magnetic flux through the loop.
B
The magnetic field induced by a current-carrying conductor is proportional to the current and inversely proportional to the distance from the conductor.
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C
The direction of the magnetic force on a moving charged particle is perpendicular to both the particle's velocity and the magnetic field.
D
The induced magnetic field in a closed loop is proportional to the rate of change of the electric field through the loop.
9
What is the unit of magnetic flux?
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A
Ohm
B
Coulomb
C
Weber
D
Tesla
10
An electric generator works based on which of the following principles?
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A
Ampere's law
B
Faraday's law
C
Lenz's law
D
Coulomb's law
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