Magnetism II - SS3 Physics Past Questions and Answers - page 1
Which of the following devices uses electromagnetism to function?
Camera
Mobile phone
Compass
Calculator
Which of the following is a key component of electric motors?
Capacitor
Resistor
Inductor
Diode
Which of the following is an application of electromagnetism in medicine?
X-ray machines
Laser surgery
Magnetic resonance imaging (MRI)
Ultrasound machines
Which of the following is an application of electromagnetism in transportation?
Aeroplanes
Cars
Trains
Bicycles
Which of the following is an application of electromagnetism in data storage?
CDs
Hard drives
Floppy disks
USB drives
Explain the application of magnetism to transportation technology
How has the knowledge of magnetism impacted medical technology
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.
What is the unit of magnetic flux?
Ohm
Coulomb
Weber
Tesla
An electric generator works based on which of the following principles?
Ampere's law
Faraday's law
Lenz's law
Coulomb's law