Magnetism from Electricity

Topic Page

Questions

• When does an iron rod become magnetic?
• Which force field can accelerate an electron, but never change its speed?
• Which force field can increase a moving electron's speed?
• Which pole of a compass needle points to a south pole of a magnet?
• Why is electromagnetism useful?
• Why is electromagnetism so important?
• Why are electromagnets used in electric appliances?
• Why are electromagnets made of soft iron?
• How can I create electromagnetism?
• How is magnetism different from electricity?
• How are electromagnets used in electric bells?
• How does the electromagnetic spectrum relate to astronomy?
• How do magnetism and electricity work together?
• How does electromagnetism affect the human body?
• How does electromagnetism affect plant growth?
• How does electromagnetic radiation relate to the structure of an atom?
• How does electromagnetic radiation relate to flame tests?
• How does electromagnetic force relate to the creation of electricity?
• How can I measure electromagnetism?
• What are some common mistakes students make with electromagnetism?
• What is electromagnetism?
• How are magnetic fields made from electricity?
• How are magnetism and electricity are related?
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• Three long current-carrying wires are perpendicular to the xy-plane passing through the points (x,y)= (0,-1 cm), (0, +1 cm) and (+1 cm,0) respectively. If each wire carries a current I=2 A in the +z-direction, what is the magnetic field at the origin?
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• What is CB?
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• In a rainbow, we see the visible light within the Electromagnetic Spectrum. But does the rainbow extend into the infrared or ultraviolet? If so, how far?
• Using the right-hand rule for forces, which way does this rod rotate?
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• What is the magnitude of the emf induced in the loop and the direction of the current through R?
• Example and explanation of electromagnetism?