Analysis on the Electromagnetic Environmental Factors of 500kV
... a special, invisible pollution - electromagnetic radiation pollution. In recent years, this pollution has caused widespread concern of the community, so find out the actual electromagnetic radiation pollution extent and scope of the high-voltage power transmission project run, and propose effective ...
... a special, invisible pollution - electromagnetic radiation pollution. In recent years, this pollution has caused widespread concern of the community, so find out the actual electromagnetic radiation pollution extent and scope of the high-voltage power transmission project run, and propose effective ...
Section 20-1: Magnetic Flux
... closed surface is proportional to the net charge enclosed by that surface. Using the correct proportionality constant, Gauss’ Law can be used to calculate electric fields in highly-symmetric situations. It is interesting to note that the analogous law in a magnetic situation, Gauss’ Law for magnetis ...
... closed surface is proportional to the net charge enclosed by that surface. Using the correct proportionality constant, Gauss’ Law can be used to calculate electric fields in highly-symmetric situations. It is interesting to note that the analogous law in a magnetic situation, Gauss’ Law for magnetis ...
printer-friendly sample test questions
... Response addresses all parts of the question clearly and correctly. An electromagnet is formed when electricity creates a magnetic field around a metal like iron that can be magnetized. Closing the switch allows the electricity to flow. When the electricity flows the electromagnet will work. 3 point ...
... Response addresses all parts of the question clearly and correctly. An electromagnet is formed when electricity creates a magnetic field around a metal like iron that can be magnetized. Closing the switch allows the electricity to flow. When the electricity flows the electromagnet will work. 3 point ...
Lesson 6 questions – Magnetic field patterns - science
... Add dotted lines to show the shape of equipotential lines associated with the field. The spacing of the equipotential lines should give an indication of the relative strength of the electric field. Practical ...
... Add dotted lines to show the shape of equipotential lines associated with the field. The spacing of the equipotential lines should give an indication of the relative strength of the electric field. Practical ...
Magnetism - thephysicsman
... • There is no such thing as a magnetic monopole. When a bar magnet is split in two, the result is two smaller bar magnets. • Even when magnetic materials are separated at the microscopic level, a dipole is formed. It is impossible to create a magnetic monopole. ...
... • There is no such thing as a magnetic monopole. When a bar magnet is split in two, the result is two smaller bar magnets. • Even when magnetic materials are separated at the microscopic level, a dipole is formed. It is impossible to create a magnetic monopole. ...
PHYS 632 Lecture 10: Induction
... If a bulk conductor is present, we can induce currents to flow in the bulk conductor. Such currents are called eddy currents since they flow in circles. Demo: Try to place a copper sheet in between a pole faces of a magnet and/or try to pull it out. For example, in pulling it out, that part of the p ...
... If a bulk conductor is present, we can induce currents to flow in the bulk conductor. Such currents are called eddy currents since they flow in circles. Demo: Try to place a copper sheet in between a pole faces of a magnet and/or try to pull it out. For example, in pulling it out, that part of the p ...
AP Physics
... 4. A rectangular conducting loop of width w, height h, and resistance R is mounted vertically on a nonconducting cart as shown below. The cart is placed on the inclined portion of a track and released from rest at position P1 at a height y0 above the horizontal portion of the track. It rolls with ne ...
... 4. A rectangular conducting loop of width w, height h, and resistance R is mounted vertically on a nonconducting cart as shown below. The cart is placed on the inclined portion of a track and released from rest at position P1 at a height y0 above the horizontal portion of the track. It rolls with ne ...
Magnetic field
A magnetic field is the magnetic effect of electric currents and magnetic materials. The magnetic field at any given point is specified by both a direction and a magnitude (or strength); as such it is a vector field. The term is used for two distinct but closely related fields denoted by the symbols B and H, where H is measured in units of amperes per meter (symbol: A·m−1 or A/m) in the SI. B is measured in teslas (symbol:T) and newtons per meter per ampere (symbol: N·m−1·A−1 or N/(m·A)) in the SI. B is most commonly defined in terms of the Lorentz force it exerts on moving electric charges.Magnetic fields can be produced by moving electric charges and the intrinsic magnetic moments of elementary particles associated with a fundamental quantum property, their spin. In special relativity, electric and magnetic fields are two interrelated aspects of a single object, called the electromagnetic tensor; the split of this tensor into electric and magnetic fields depends on the relative velocity of the observer and charge. In quantum physics, the electromagnetic field is quantized and electromagnetic interactions result from the exchange of photons.In everyday life, magnetic fields are most often encountered as a force created by permanent magnets, which pull on ferromagnetic materials such as iron, cobalt, or nickel, and attract or repel other magnets. Magnetic fields are widely used throughout modern technology, particularly in electrical engineering and electromechanics. The Earth produces its own magnetic field, which is important in navigation, and it shields the Earth's atmosphere from solar wind. Rotating magnetic fields are used in both electric motors and generators. Magnetic forces give information about the charge carriers in a material through the Hall effect. The interaction of magnetic fields in electric devices such as transformers is studied in the discipline of magnetic circuits.