Homework No. 05 (Fall 2013) PHYS 320: Electricity and Magnetism I
... Use these to find the force on a point dipole due to a point charge. (b) The electric field of a point dipole d at distance r from the dipole is given by Eq. (1). The force on a point charge in the presence of an electric field is F = qE. ...
... Use these to find the force on a point dipole due to a point charge. (b) The electric field of a point dipole d at distance r from the dipole is given by Eq. (1). The force on a point charge in the presence of an electric field is F = qE. ...
magnetic field
... A magnetic field is a vector product like an electric field – direction maters. ...
... A magnetic field is a vector product like an electric field – direction maters. ...
09magnetism
... He thought that they were due to microscopic currents in the atoms (atomic currents). ...
... He thought that they were due to microscopic currents in the atoms (atomic currents). ...
Ch 21 PowerPoint Notes
... A magnetic field surrounds a magnet and can exert magnetic forces. Magnetic field lines begin near the north pole and extend toward the south pole. • The arrows on the field lines indicate what direction a compass needle would point at each point in space. • Where lines are close together, the fiel ...
... A magnetic field surrounds a magnet and can exert magnetic forces. Magnetic field lines begin near the north pole and extend toward the south pole. • The arrows on the field lines indicate what direction a compass needle would point at each point in space. • Where lines are close together, the fiel ...
Lecture 8 - Purdue Physics
... the total magnetic field produced by two or more different sources is equal to the sum of the fields produced by each source individually – The principle of superposition can be used to find the pattern of magnetic field lines in virtually all situations ...
... the total magnetic field produced by two or more different sources is equal to the sum of the fields produced by each source individually – The principle of superposition can be used to find the pattern of magnetic field lines in virtually all situations ...
Interactions Between Electric and Magnetic Fields.
... • The right hand rule is used in order to determine the direction in which the vector resulting from the cross product would act. • To find the direction of vector C, you would start by pointing the fingers of your right hand in the direction of the first vector (A) with your palm open in the direct ...
... • The right hand rule is used in order to determine the direction in which the vector resulting from the cross product would act. • To find the direction of vector C, you would start by pointing the fingers of your right hand in the direction of the first vector (A) with your palm open in the direct ...
![L 29 Electricity and Magnetism [6] Laws of Magnetism The electric](http://s1.studyres.com/store/data/001482032_1-b69d1eb7a0f8c001e0e2a09bf26d62d2-300x300.png)
8J Magnets and electromagnets
... A wire carrying an electric current also shows magnetic field lines around it. They obey the same rules as magnetic fields. The closer the lines are together the stronger the force. But does this attract or repel a magnet? That depends on which way the current is flowing. ...
... A wire carrying an electric current also shows magnetic field lines around it. They obey the same rules as magnetic fields. The closer the lines are together the stronger the force. But does this attract or repel a magnet? That depends on which way the current is flowing. ...
Document
... A wire carrying an electric current also shows magnetic field lines around it. They obey the same rules as magnetic fields. The closer the lines are together the stronger the force. But does this attract or repel a magnet? That depends on which way the current is flowing. ...
... A wire carrying an electric current also shows magnetic field lines around it. They obey the same rules as magnetic fields. The closer the lines are together the stronger the force. But does this attract or repel a magnet? That depends on which way the current is flowing. ...
Activity 2 - Electromagnets
... You will need to wrap more turns of wire around a pencil, however, in order to achieve a useable magnetic field. For THEMIS, we want students to understand, through this hands-on experiment, that magnetic fields can be produced by flowing currents or charged particles (electricity!). We also want th ...
... You will need to wrap more turns of wire around a pencil, however, in order to achieve a useable magnetic field. For THEMIS, we want students to understand, through this hands-on experiment, that magnetic fields can be produced by flowing currents or charged particles (electricity!). We also want th ...
Review Faraday’s Law of Induction in words is !
... • Thus this generator produces an induced voltage that varies from positive to negative and back, and is called an alternator ...
... • Thus this generator produces an induced voltage that varies from positive to negative and back, and is called an alternator ...
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.