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