File
... the magnetic field, B. This description however does not completely describe the direction since the force could be either up or down and still be perpendicular to both the current and the magnetic field. Experimentally the direction of the force is given by another right hand rule. This right hand ...
... the magnetic field, B. This description however does not completely describe the direction since the force could be either up or down and still be perpendicular to both the current and the magnetic field. Experimentally the direction of the force is given by another right hand rule. This right hand ...
Exam 3
... vector of the electron makes an angle of 30° with the +y axis. What is the direction of the magnetic force on the electron when it enters the field? ...
... vector of the electron makes an angle of 30° with the +y axis. What is the direction of the magnetic force on the electron when it enters the field? ...
magnetism ppt
... • In most materials, magnetic effects due to motion of electrons cancel out • Some materials have several spinning electrons without an opposite spinning partner • Called ferromagnetic from the Latin word for iron • Fe, Co, Ni, Dy, Pa, Nd ...
... • In most materials, magnetic effects due to motion of electrons cancel out • Some materials have several spinning electrons without an opposite spinning partner • Called ferromagnetic from the Latin word for iron • Fe, Co, Ni, Dy, Pa, Nd ...
Phys202_Final_Exam_Spr2007.doc
... existence upon a. Boson statistics b. quantized energy levels c. Heisenberg uncertainty principle d. ~ exclusion principle 70. Assume alpha decay of 239PU -> AX + then what is the value of A: a. 238 b. 242 c.~ 234 d. 235 71. Assume alpha decay of 239PU -> AX + then what is the value of X: a. Th ...
... existence upon a. Boson statistics b. quantized energy levels c. Heisenberg uncertainty principle d. ~ exclusion principle 70. Assume alpha decay of 239PU -> AX + then what is the value of A: a. 238 b. 242 c.~ 234 d. 235 71. Assume alpha decay of 239PU -> AX + then what is the value of X: a. Th ...
week10-ampere
... Calculate flux through closed surface Small magnetic material such as found in compass can indicate local direction of magnetic field ...
... Calculate flux through closed surface Small magnetic material such as found in compass can indicate local direction of magnetic field ...
Chapter 11: Thermochemistry
... When current changes in the primary coil (turning on and off a switch), the changing magnetic field that builds up in the primary coil will extend to the secondary coil. If an iron core is placed inside both coils, the effect is intensified. By using alternating current, the current changes au ...
... When current changes in the primary coil (turning on and off a switch), the changing magnetic field that builds up in the primary coil will extend to the secondary coil. If an iron core is placed inside both coils, the effect is intensified. By using alternating current, the current changes au ...
Chapter 20
... • A magnetic field is created at all points in space around a current-carrying wire. • The magnetic field at each point is a vector. It has both a magnitude (magnetic field strength, B) and direction. • The magnetic field exerts forces on magnetic poles. The force on a north pole is parallel to B; t ...
... • A magnetic field is created at all points in space around a current-carrying wire. • The magnetic field at each point is a vector. It has both a magnitude (magnetic field strength, B) and direction. • The magnetic field exerts forces on magnetic poles. The force on a north pole is parallel to B; t ...
Phy 275 Chapter 31 Faraday`s Law Ch 29: Force of magnetic field
... = N Δ(BA)/Δt = NA ΔB/Δt = N d2 ΔB/Δt ...
... = N Δ(BA)/Δt = NA ΔB/Δt = N d2 ΔB/Δt ...
Electromagnet
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number of closely spaced turns of wire that create the magnetic field. The wire turns are often wound around a magnetic core made from a ferromagnetic or ferrimagnetic material such as iron; the magnetic core concentrates the magnetic flux and makes a more powerful magnet.The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field.Electromagnets are widely used as components of other electrical devices, such as motors, generators, relays, loudspeakers, hard disks, MRI machines, scientific instruments, and magnetic separation equipment. Electromagnets are also employed in industry for picking up and moving heavy iron objects such as scrap iron and steel.