File
... 41. Draw a rough sketch of the pattern of the field lines due to 1) current flowing into a circular coil and 2) solenoid carrying current. 42. State the rule to determine the direction of 1. Magnetic field produced around a current carrying conductor. 2. Force experienced by a straight conductor car ...
... 41. Draw a rough sketch of the pattern of the field lines due to 1) current flowing into a circular coil and 2) solenoid carrying current. 42. State the rule to determine the direction of 1. Magnetic field produced around a current carrying conductor. 2. Force experienced by a straight conductor car ...
The Power of Magnets
... magnets can be found everywhere, including your hard disk, ATM and credit cards, speakers and microphones, electric motors, and toys. Electric motors work through an interaction between an electromagnet and a permanent magnet. Every permanent magnet generates a magnetic field, just like any other ma ...
... magnets can be found everywhere, including your hard disk, ATM and credit cards, speakers and microphones, electric motors, and toys. Electric motors work through an interaction between an electromagnet and a permanent magnet. Every permanent magnet generates a magnetic field, just like any other ma ...
Exam III review - University of Colorado Boulder
... False: That formula is for an infinitely long straight wire, with no other wires nearby. It doesn't apply here because the other side of the U breaks the symmetry of the situation. In this messy situation, with a U-shaped wire, Ampere's Law is true, but not useful since the integral is very messy. T ...
... False: That formula is for an infinitely long straight wire, with no other wires nearby. It doesn't apply here because the other side of the U breaks the symmetry of the situation. In this messy situation, with a U-shaped wire, Ampere's Law is true, but not useful since the integral is very messy. T ...
Magnetism
... direction of B while S pole goes the other way. – Field exerts a TORQUE on a compass needle. – Compass needle is a magnetic dipole. – North Pole of compass points toward the NORTH. – The NORTH geographic pole of the planet is therefore a magnetic South pole! ...
... direction of B while S pole goes the other way. – Field exerts a TORQUE on a compass needle. – Compass needle is a magnetic dipole. – North Pole of compass points toward the NORTH. – The NORTH geographic pole of the planet is therefore a magnetic South pole! ...
Magnetic induction: Motional EMF, Faraday`s law, Induced electric
... As we have seen earlier in these notes, the EMF induced by the first method is the motional EMF, ultimately stemming from the Lorentz forces on the electrons in the moving wires. But the physics underlying the other two methods seems to be quite different: Moving a magnet or varying the current thro ...
... As we have seen earlier in these notes, the EMF induced by the first method is the motional EMF, ultimately stemming from the Lorentz forces on the electrons in the moving wires. But the physics underlying the other two methods seems to be quite different: Moving a magnet or varying the current thro ...
S. Savin
... solar plasma into magnetosphere correlate with the low magnitude of magnetic field (|B|) (e.g. with outer cusp and antiparallel magnetic fields at MP). -A mechanism for the transport in this situation is the ‘primary’ reconnection, which releases the energy stored in the magnetic field, but it depen ...
... solar plasma into magnetosphere correlate with the low magnitude of magnetic field (|B|) (e.g. with outer cusp and antiparallel magnetic fields at MP). -A mechanism for the transport in this situation is the ‘primary’ reconnection, which releases the energy stored in the magnetic field, but it depen ...
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.