Magnets and Magnet Fields

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Questions

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• How does the net charge relate to electromagnetic fields?
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• How are magnets and magnetic fields related?
• How are magnets and magnetic fields related to electricity generation?
• What happens when a wire is placed within a magnetic field?
• What types of magnets are easy to magnetize but lose magnetism quickly?
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• A circular loop of radius a , carrying a current I ,is placed in a 2D magnetic field. The centre of the loop coincides with the centre of the field. The strength of magnetic field at the periphery of loop is B. Find the magnetic force on the wire?
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• A student asserts that putting two current-carrying rods next to each other causes them to repel because they carry like charges. Is the student correct?
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• A beam of #prop# particles (helium nuclei) is used to treat a tumor located 10.0 cm inside a patient. To penetrate to the tumor, the #prop# particles must be accelerated to a speed of 0.458c, where c is the speed of light. (Ignore relativistic effects?
• How are electric and magnetic fields related?
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• What is a magnetic field?
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• A copper rod is suspended in a non-homogeneous magnetic field region. How will it align itself in equilibrium?
• If a magnet is suspended at an angle of #30^o# to the earth magnetic meridian , the dip needle makes angle of #45^o# with the horizontal . the real dip is ?