Magnetic effects (PPT)
... 1000 the Chinese found that such a needle, when freely suspended, pointed north-south - compass. The magnetic compass soon spread to Europe. Columbus used it when he crossed the Atlantic ocean, noting not only that the needle deviated slightly from exact north (as indicated by the stars) but also th ...
... 1000 the Chinese found that such a needle, when freely suspended, pointed north-south - compass. The magnetic compass soon spread to Europe. Columbus used it when he crossed the Atlantic ocean, noting not only that the needle deviated slightly from exact north (as indicated by the stars) but also th ...
Extension worksheet – Topic 6 - Cambridge Resources for the IB
... z-axis is parallel to the magnetic field there will be no force in the vertical direction. The x-component of velocity is at right angles to the magnetic field and so the proton will experience a force F qvx B which will make the proton to ...
... z-axis is parallel to the magnetic field there will be no force in the vertical direction. The x-component of velocity is at right angles to the magnetic field and so the proton will experience a force F qvx B which will make the proton to ...
HOME 3 REVIEW WORKSHEET Answer these questions on loose
... 4. Where is the magnetic field of a bar magnet the strongest? 5. Why is wire coiled in order to make an electromagnet? 6. Where is the magnetic field of an electromagnet the strongest? 7. In what ways is an electromagnet similar to a bar magnet? In what ways is it different? 8. Give two ways to chan ...
... 4. Where is the magnetic field of a bar magnet the strongest? 5. Why is wire coiled in order to make an electromagnet? 6. Where is the magnetic field of an electromagnet the strongest? 7. In what ways is an electromagnet similar to a bar magnet? In what ways is it different? 8. Give two ways to chan ...
32.2. The Induced Electric
... If a steady current flows through an inductor, a time-independent magnetic field is created. If suddenly the current source is disconnected, the change in the enclosed magnetic flux will generate a self-induced emf which will try to keep the current flowing in the original direction. The electric en ...
... If a steady current flows through an inductor, a time-independent magnetic field is created. If suddenly the current source is disconnected, the change in the enclosed magnetic flux will generate a self-induced emf which will try to keep the current flowing in the original direction. The electric en ...
SEE 2053 Teknologi Elektrik
... An induced current has a direction such that the magnetic field due to the induced current opposes the change in the magnetic flux that induces the current. As the magnet is moved toward the loop, the B through the loop increases, therefore a counterclockwise current is induced in the loop. The cur ...
... An induced current has a direction such that the magnetic field due to the induced current opposes the change in the magnetic flux that induces the current. As the magnet is moved toward the loop, the B through the loop increases, therefore a counterclockwise current is induced in the loop. The cur ...
PPT-9
... •A charge is a quantity that is the source of a field that extends into space. For gravity, the charge is mass (kg) and for electromagnetism the charge is electric (coulombs). •The field strength is proportional the amount of charge (kg or coulombs). The closer the field line are together; the stron ...
... •A charge is a quantity that is the source of a field that extends into space. For gravity, the charge is mass (kg) and for electromagnetism the charge is electric (coulombs). •The field strength is proportional the amount of charge (kg or coulombs). The closer the field line are together; the stron ...
TAP413-0: The force on the moving charge
... circular path when a magnetic field is applied makes a good introduction to this episode. If the apparatus is not available, then using a magnet to distort a black and white TV picture offers an alternative but avoid a colour TV where lasting damage can occur. ...
... circular path when a magnetic field is applied makes a good introduction to this episode. If the apparatus is not available, then using a magnet to distort a black and white TV picture offers an alternative but avoid a colour TV where lasting damage can occur. ...
Electromagnetic Induction
... inside the field when the right side is out. The resistance of the loop is 0.5 Ω. a. What is the direction of the induced current in the loop? b. Calculate the induced emf in the loop. c. Calculate the induced current in the loop. d. Calculate the applied force required to move the loop at the const ...
... inside the field when the right side is out. The resistance of the loop is 0.5 Ω. a. What is the direction of the induced current in the loop? b. Calculate the induced emf in the loop. c. Calculate the induced current in the loop. d. Calculate the applied force required to move the loop at the const ...
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.