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Magnetism: Quiz


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Question 1: The last-mentioned tendency dominates in the metals ________, Co and Ni, and in some rare earths, which are ferromagnetic, whereas most of the other metals, where the first-mentioned tendency dominates, are nonmagnetic (as e.g.

Question 2: Certain grand unified theories predict the existence of monopoles which, unlike elementary particles, are ________ (localized energy packets).
Dispersion (water waves)Cnoidal waveBoussinesq approximation (water waves)Soliton

Question 3: The term magnetism is used to describe how materials respond on the microscopic level to an applied ________; to categorize the magnetic phase of a material.
ElectromagnetismMaxwell's equationsMagnetic momentMagnetic field

Question 4: (Nuclear magnetic moments are important in other contexts, particularly in Nuclear Magnetic Resonance (NMR) and ________ (MRI).)
Functional magnetic resonance imagingMagnetic resonance imagingMedical imagingPositron emission tomography

Question 5: Some are attracted to a magnetic field (paramagnetism); others are repulsed by a magnetic field (________); others have a much more complex relationship with an applied magnetic field.
DiamagnetismSuperdiamagnetismPermeability (electromagnetism)Ferromagnetism

Question 6: The magnetic moment of atoms in a ________ material cause them to behave something like tiny permanent magnets.
IronFerromagnetismCobaltMagnetic field

Question 7: Thus, special relativity "mixes" electricity and magnetism into a single, inseparable phenomenon called electromagnetism (analogous to how relativity "mixes" space and time into ________).
T-symmetrySpacetimeTime dilationProper time

Question 8: Using quantum theory Dirac showed that if magnetic monopoles exist, then one could explain the quantization of electric charge---that is, why the observed ________ carry charges that are multiples of the charge of the electron.
QuarkElementary particleParticle physicsStandard Model

Question 9: Magnetic domains can be observed with a ________ to reveal magnetic domain boundaries that resemble white lines in the sketch.There are many scientific experiments that can physically show magnetic fields.
Magnetic force microscopeScanning probe microscopyScanning tunneling microscopeNear-field scanning optical microscope

Question 10: They also arise from "intrinsic" ________ arising from quantum-mechanical spin.
Magnetic fieldDipoleElectric dipole momentMagnetic moment


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