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- https://phys.libretexts.org/Bookshelves/College_Physics/College_Physics_1e_(OpenStax)/22%3A_Magnetism/22.09%3A_Magnetic_Fields_Produced_by_Currents-_Amperes_LawThe strength of the magnetic field created by current in a long straight wire is given by B=μ0I2πr(longstraightwire), where I is the ...The strength of the magnetic field created by current in a long straight wire is given by B=μ0I2πr(longstraightwire), where I is the current, r is the shortest distance to the wire, and the constant μ0=4π×10−7T⋅m/a is the permeability of free space. The direction of the magnetic field created by a long straight wire is given by right hand rule 2 (RHR-2): Point the thumb of the right hand in the d
- https://phys.libretexts.org/Bookshelves/University_Physics/Book%3A_Introductory_Physics_-_Building_Models_to_Describe_Our_World_(Martin_Neary_Rinaldo_and_Woodman)/22%3A_Source_of_Magnetic_Field/22.01%3A_The_Biot-Savart_LawThe Biot-Savart law allows us to determine the magnetic field at some position in space that is due to an electric current. More precisely, the Biot-Savart law allows us to calculate the infinitesimal...The Biot-Savart law allows us to determine the magnetic field at some position in space that is due to an electric current. More precisely, the Biot-Savart law allows us to calculate the infinitesimal magnetic field, dB, that is produced by a small section of wire, dl , carrying current, I , such that dl is co-linear with the wire and points in the direction of the electric current.
- https://phys.libretexts.org/Courses/Berea_College/Introductory_Physics%3A_Berea_College/22%3A_Source_of_Magnetic_Field/22.01%3A_The_Biot-Savart_LawThe Biot-Savart law allows us to determine the magnetic field at some position in space that is due to an electric current. More precisely, the Biot-Savart law allows us to calculate the infinitesimal...The Biot-Savart law allows us to determine the magnetic field at some position in space that is due to an electric current. More precisely, the Biot-Savart law allows us to calculate the infinitesimal magnetic field, dB, that is produced by a small section of wire, dl , carrying current, I , such that dl is co-linear with the wire and points in the direction of the electric current.
- https://phys.libretexts.org/Bookshelves/Electricity_and_Magnetism/Book%3A_Applications_of_Maxwells_Equations_(Cochran_and_Heinrich)/04%3A_The_Magnetostatic_Field_I/4.02%3A_The_Law_of_Biot-SavartIf the thickness of the wire is very small compared with the distance to the point of observation, one can neglect the very small variations of \(|\overrightarrow{\mathrm{R}}-\overrightarrow{\mathrm{r...If the thickness of the wire is very small compared with the distance to the point of observation, one can neglect the very small variations of |→R−→r|=√(X−x)2+(Y−y)2+(Z−z)2 for the various elements across the wire section, so that when integrated over the wire cross-section Equations (4.1.14) and (4.1.15) become line integrals:
- https://phys.libretexts.org/Bookshelves/Electricity_and_Magnetism/Electromagnetics_and_Applications_(Staelin)/06%3A_Actuators_and_sensors_motors_and_generators/6.04%3A_Linear_magnetic_motors_and_actuatorsThis page covers solenoid actuators, which use cylindrical coils and a high-permeability core that moves with current. It examines the behavior of internal magnetic fields and their forces, including ...This page covers solenoid actuators, which use cylindrical coils and a high-permeability core that moves with current. It examines the behavior of internal magnetic fields and their forces, including fringing fields and energy density. Additionally, it discusses magnetic fields' application in MEMS switches, detailing how magnetic pressures and the Lorentz force law facilitate current-induced movements in a beam, enabling logical functions in these devices.
- https://phys.libretexts.org/Bookshelves/University_Physics/Calculus-Based_Physics_(Schnick)/Volume_B%3A_Electricity_Magnetism_and_Optics/B36%3A_The_Biot-Savart_LawThe Biot-Savart Law provides us with a way to find the magnetic field at an empty point in space, let’s call it point P, due to current in wire.
- https://phys.libretexts.org/Courses/Georgia_State_University/GSU-TM-Physics_II_(2212)/06%3A_Sources_of_Magnetism_Magnetic_Forces_and_Fields/6.04%3A_The_Biot-Savart_LawUse the right-hand rule to verify the direction of the magnetic field produced from the current or to write down the direction of the magnetic field if only the magnitude was solved for in the previou...Use the right-hand rule to verify the direction of the magnetic field produced from the current or to write down the direction of the magnetic field if only the magnitude was solved for in the previous part.
- https://phys.libretexts.org/Courses/Kettering_University/Electricity_and_Magnetism_with_Applications_to_Amateur_Radio_and_Wireless_Technology/08%3A_The_Magnetic_Field/8.04%3A_The_Biot-Savart_LawWe have seen that mass produces a gravitational field and also interacts with that field. Charge produces an electric field and also interacts with that field. Since moving charge (that is, current) i...We have seen that mass produces a gravitational field and also interacts with that field. Charge produces an electric field and also interacts with that field. Since moving charge (that is, current) interacts with a magnetic field, we might expect that it also creates that field—and it does.
- https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/University_Physics_II_-_Thermodynamics_Electricity_and_Magnetism_(OpenStax)/12%3A_Sources_of_Magnetic_Fields/12.02%3A_The_Biot-Savart_LawWe have seen that mass produces a gravitational field and also interacts with that field. Charge produces an electric field and also interacts with that field. Since moving charge (that is, current) i...We have seen that mass produces a gravitational field and also interacts with that field. Charge produces an electric field and also interacts with that field. Since moving charge (that is, current) interacts with a magnetic field, we might expect that it also creates that field—and it does.
- https://phys.libretexts.org/Courses/Berea_College/Electromagnetics_I/02%3A_Electric_and_Magnetic_Fields/2.07%3A_Magnetic_Field_IntensityMagnetic field intensity H is an alternative description of the magnetic field in which the effect of material is factored out.
- https://phys.libretexts.org/Courses/Georgia_State_University/GSU-TM-Introductory_Physics_II_(1112)/07%3A_Magnetism/7.10%3A_Magnetic_Fields_Produced_by_Currents-_Amperes_LawThe direction of the magnetic field created by a long straight wire is given by right hand rule 2 (RHR-2): Point the thumb of the right hand in the direction of current, and the fingers curl in the di...The direction of the magnetic field created by a long straight wire is given by right hand rule 2 (RHR-2): Point the thumb of the right hand in the direction of current, and the fingers curl in the direction of the magnetic field loops created by it. a rule to determine the direction of the magnetic field induced by a current-carrying wire: Point the thumb of the right hand in the direction of current, and the fingers curl in the direction of the magnetic field loops
