DC Motors
... The magnitude and direction of this force depend on four variables: the magnitude and direction of the current (I), the length of the wire (L), the strength and direction of the magnetic field (B), and the angle between the field and the wire (Θ). ...
... The magnitude and direction of this force depend on four variables: the magnitude and direction of the current (I), the length of the wire (L), the strength and direction of the magnetic field (B), and the angle between the field and the wire (Θ). ...
magnetic fields - King`s Senior Science
... points from “North” to “South” poles opposite poles attract like poles repel ...
... points from “North” to “South” poles opposite poles attract like poles repel ...
Magnetism and electromagnetism worksheet
... (b) Beside the diagram draw another diagram to show how the tiny molecular magnets would be arranged when it was completely magnetised. ...
... (b) Beside the diagram draw another diagram to show how the tiny molecular magnets would be arranged when it was completely magnetised. ...
32.28. Model: A magnetic field exerts a force on a moving charge
... 32.28. Model: A magnetic field exerts a force on a moving charge. Visualize: Please refer to Figure Ex32.28. Solve: (a) The force on a charge moving in a magnetic field is r r r Fon q = qv × B = (qvBsinα, direction of right-hand rule) The direction of the force on a negative charge is opposite the d ...
... 32.28. Model: A magnetic field exerts a force on a moving charge. Visualize: Please refer to Figure Ex32.28. Solve: (a) The force on a charge moving in a magnetic field is r r r Fon q = qv × B = (qvBsinα, direction of right-hand rule) The direction of the force on a negative charge is opposite the d ...
Name ______ period __
... 16.Alternating Current (____) - For each ½ rotation of the ___________ loop, the current produced by the generator _____________________ direction or alternates. 17.Electricity in Your Home - The electricity you use in your home is created by large ______________________ at the power plants. The ___ ...
... 16.Alternating Current (____) - For each ½ rotation of the ___________ loop, the current produced by the generator _____________________ direction or alternates. 17.Electricity in Your Home - The electricity you use in your home is created by large ______________________ at the power plants. The ___ ...
Magnetism - Killeen ISD
... Each magnet has one north pole and one south pole. Like poles repel, and opposite poles attract. The magnetic region where you can “feel the force” is called a magnetic field. ...
... Each magnet has one north pole and one south pole. Like poles repel, and opposite poles attract. The magnetic region where you can “feel the force” is called a magnetic field. ...
Slide 1 - Cobb Learning
... Imagine your right hand curled around the wire, your thumb points in the direction of the current and your fingers show the direction of the magnetic field ...
... Imagine your right hand curled around the wire, your thumb points in the direction of the current and your fingers show the direction of the magnetic field ...
Homework 7
... momentum of the electron about the center of the circe is L = 4.00 · 10−25 Js. Determine (a) the radius of the circular path and (b) the speed of the electron. Angular momentum is defined as L = r × p = mr × v ...
... momentum of the electron about the center of the circe is L = 4.00 · 10−25 Js. Determine (a) the radius of the circular path and (b) the speed of the electron. Angular momentum is defined as L = r × p = mr × v ...
week 10
... A long solenoid is wound with 500 turns per metre and the current in its windings is increasing at the rate of 100 A/s. The cross-sectional area of the solenoid is 4.0 cm2. A wire loop is placed around the solenoid on the same ...
... A long solenoid is wound with 500 turns per metre and the current in its windings is increasing at the rate of 100 A/s. The cross-sectional area of the solenoid is 4.0 cm2. A wire loop is placed around the solenoid on the same ...
I happen to have discovered a direct relation
... For example, rocks from Magnesia in Asia Minor (town of Tekin in modern day Turkey), from which the term “magnet” is derived, became magnets by being heated inside the Earth and then cooled. ...
... For example, rocks from Magnesia in Asia Minor (town of Tekin in modern day Turkey), from which the term “magnet” is derived, became magnets by being heated inside the Earth and then cooled. ...
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.