outer core fluid is not fully understood. Some researchers have linked rotation of Earth‚ due to "original spin" at the time our solar system formed‚ to the rotation of the outer core. Circulating magma in the molten outer core generates a weak magnetic field‚ which the researchers suspect may be leaking into the inner core and generating an electric current. The twisting force generated by this electromagnetic interaction may be what drives the inner core’s rotation.” Third‚ the Marianas Trench as
Premium Earth Magnetic field
1 Electromagnetic Induction: Faraday’s Law OBJECTIVE: To understand how changing magnetic fields can produce electric currents. To examine Lenz’s Law and the derivative form of Faraday’s Law. EQUIPMENT: Circular Coils apparatus‚ PC sound card‚ FFTScope‚ magnet ‚ paper clip‚ cables‚ small (magnetic) compass‚ paper clip‚ multimeter w/long cable INTRODUCTION: Have you ever wondered how a telephone works? You may recall (perhaps in middle school or high school) that sound waves from your voice are converted
Premium Magnetic field
induction followed by resonant magnetic induction. Other methods under consideration include electromagnetic radiation in the form of microwaves or lasers. Energy transfer and efficiency The general principle is that if a given oscillating amount of energy (for example alternating current from a wall outlet) is placed into a primary coil which is capacitively loaded‚ the coil will ’ring’‚ and form an oscillating magnetic field. The energy will transfer back and forth between the magnetic field in the inductor
Premium Electromagnetism Electricity Transformer
warming was created The production of electricity * In 1831‚ Michael Faraday discovered electromagnetic induction‚ which lead to the development of the electrical generator * The generator consists of a rotating coil or wire in a magnetic field * Most power stations burn fuel to obtain this energy. * Nuclear Power stations‚ hydroelectric power station‚ wind power‚ tidal energy are used to save non renewable energy. Electrostatics * Electrostatic is the study of bodies
Premium Electric charge Magnetic field Electric current
Headphones would not have been invented had it not been for the revolutionary combination of beneficial concepts in both electricity and magnetism. Not that much of a scientific fiction anymore‚ hovering vehicles seem achievable through magnetic levitation using Lenz’s law‚ as demonstrated by the already existing maglev trains in Japan‚ South Korea‚ and China. It is true that power supply is problematic and expensive. However‚ it is a decent beginning that shows the possibility of having
Premium Magnetic field Electromagnetism Magnetism
is a bigger surface area so the magnetism cuts through more coils‚ which induces a bigger current. For the current variable I believe that the greater the current‚ the more paper clips picked up. This is because the magnetism has a greater field to cut through so it induces more electricity. Plan: We are going to make a circuit‚ including a coil around a core‚ and measure how the variables affect the number of paper clips picked up. These variables are length of wire‚ number of
Premium Magnetic field
circuit with 12 volts and 5 ampers the restiance would be ________ ohms. A.) 2.4 16.) Soft iron used in the laminations of a coil or transformer has_____________. A.) a 17.) What happens when a coil of wire is passed through a magnetic field? A.) Magnetic field is cut by the wire and current will flow. 18.) What happens when electric current is passed through a coil or
Premium Electron Magnetic field Electromagnetism
passes through a neutral plane. 5. State what component causes a generator to produce direct current rather than alternating current. 6. Identify the point at which the brush contact should change from one commutator segment to the next. 7. State how field strength can be varied in a dc generator. 8. Describe the cause of sparking between brushes and commutator. 9. State what is meant by "armature reaction." 10. State the purpose of interpoles. 11. Explain the effect of motor reaction in a dc generator
Premium Magnetic field Electrical generator
Laws of Motion Work‚ Energy and Power Motion of System of Particles and Rigid Body Gravitation Properties of Bulk Matter Thermodynamics Behaviour of Perfect Gas and Kinetic Theory Oscillations and Waves Electrostatics Current Electricity Magnetic Effects of Current and Magnetism Electromagnetic Induction and Alternating Currents Electromagnetic Waves Optics Dual Nature of Matter and Radiation Atoms and Nuclei Electronic Devices CHEMISTRY S.No. 1. 2. 3. 4. 5. 6. 7. 8. 9
Premium Magnetic field Energy Potential energy
eddy current braking system for high speed. For such a breaker‚ we give analytical formulas considering end effects for its magnetic field‚ eddy current distribution‚ forces according to the secondary relative permeability‚ and conductivity. The results given here are purely analytic & applicable. INTRODUCTION The term “EDDY” Focault Bae J. S.(2004) found that when magnetic flux linked with a metallic conductor changes‚ induced currents are set up in the conductor in the form of closed loops. These
Premium Magnetic field Electric current Electromagnetism