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This quiz covers the topics of magnetic fields, magnetic flux density, magnetic flux, forces in magnetic fields and electromagnetic induction. It tests material learnt in the mind map on electromagnetism, and associated notes and mind maps.
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almost 10 years ago
almost 10 years ago
Magnetic Field Lines flow in which direction?
From the north pole to the south pole of a magnet.
From the south pole to the north pole of a magnet
From the north pole of a magnet to a north pole of another magnet
What is measured by the Magnetic Flux Density?
Size of the magnetic field
Strength of the magnetic field
Current flowing through the magnetic field
What is the unit of magnetic flux?
What is the formula for the force on a current-carrying conductor in a magnetic field?
F = ILB
F = qvB
F = ΦB
Lenz's law states that the magnitude of an emf induced by a changing magnetic flux is proportional to the rate of change of flux linking a circuit.
Which of the following electrical devices use the phenomenon of mutual induction?
What energy conversion takes place in a generator?
Electrical to mechanical
Mechanical to heat
Mechanical to electrical
Which of the following objects use inductors?
Mobile phone chargers
Dimmer switches in lighting
Alternating current is a current whose direction reverses constantly.
The left hand rule is used in which scenario?
Direction of force on a current-carrying conductor in a magnetic field
Direction of magnetic field due to current
Magnitude of force on a current-carrying conductor in a magnetic field
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