Phys 115 1st Edition Lecture 14Outline of Last Lecture I. MagnetismII. Torque on magnetic dipole due to a magnetic fieldIII. Magnetic force on charged particlesOutline of Current Lecture IV. Magnetic force on a current-carrying wireV. Magnetic fields due to currentsCurrent Lecture A wire of length L carrying a current I that is immersed in an external magnetic field B will experience a force whose magnitude is given by Direction of this force determined by a right hand rule: Point your fingers in the direction of the current (i.e., the direction positive charges flow). Curl your fingers toward the direction the magnetic field points. Your thumb points in the direction of the force of the magnetic field on the current-carrying wire.These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. Currents (aka, moving electric charges) create magnetic fields. A long, straight wire carrying a current I produces a magnetic field of magnitude The direction of the magnetic field of a long-current carrying wire is given by a right hand rule. Solenoid: long coil of wire with the same current I passing through each loop (turn) of wire Inside a solenoid that is very long compared to its diameter, the magnetic field has a magnitude Direction of magnetic field inside solenoid given by a right hand rule: Curl your fingers in the direction of the current Your thumb points in the direction of the magnetic
View Full Document
Unlocking...