Fundamentals of Physics 8/e 29 - Current-Produced Magnetic Field D. Halliday, R. Resnick, and J. Walker 國立彰化師大教學卓越計畫 理學院普通物理整合型教材 主持人：郭艷光院長
彰化師大教學卓越－普物教材－理學院長郭艷光主持 Outline 29-1 What Is Physics? 29-2 Calculating the Magnetic Field Due to a Current 29-3 Force Between Two Parallel Currents 29-4 Ampere’s Law 29-5 Solenoids and Toroids 29-6 A Current-Carrying Coil as a Magnetic Dipole 彰化師大教學卓越－普物教材－理學院長郭艷光主持
彰化師大教學卓越－普物教材－理學院長郭艷光主持 29-1 What Is Physics? In this chapter we will explore the relationship between an electric current and the magnetic field it generates in the space around it. We will follow a two-prong approach, depending on the symmetry of the problem. For problems with low symmetry we will use the law of Biot-Savart in combination with the principle of superposition. For problems with high symmetry we will introduce Ampere’s law. 彰化師大教學卓越－普物教材－理學院長郭艷光主持
29-2 Calculating the Magnetic Field Due to a Current The law of Biot-Savart The constant μ0=4π×10⁻⁷ T‧m/A=1.26×10⁻⁶ T‧m/A and is known as “permeability constant”. A 彰化師大教學卓越－普物教材－理學院長郭艷光主持
29-2 Calculating the Magnetic Field Due to a Current Magnetic field generated by a long straight wire 彰化師大教學卓越－普物教材－理學院長郭艷光主持
29-2 Calculating the Magnetic Field Due to a Current . Magnetic field generated by a circular wire arc of radius R at its center C 彰化師大教學卓越－普物教材－理學院長郭艷光主持
29-2 Calculating the Magnetic Field Due to a Current Magnetic field generated by a circular loop along the loop axis 彰化師大教學卓越－普物教材－理學院長郭艷光主持
29-3 Force Between Two Parallel Currents 彰化師大教學卓越－普物教材－理學院長郭艷光主持
彰化師大教學卓越－普物教材－理學院長郭艷光主持 29-4 Ampere’s Law 彰化師大教學卓越－普物教材－理學院長郭艷光主持
彰化師大教學卓越－普物教材－理學院長郭艷光主持 29-4 Ampere’s Law Magnetic field outside a long straight wire : 彰化師大教學卓越－普物教材－理學院長郭艷光主持
彰化師大教學卓越－普物教材－理學院長郭艷光主持 29-4 Ampere’s Law Magnetic field inside a long straight wire R r B O 彰化師大教學卓越－普物教材－理學院長郭艷光主持
29-5 Solenoids and Toroids 彰化師大教學卓越－普物教材－理學院長郭艷光主持
29-5 Solenoids and Toroids 彰化師大教學卓越－普物教材－理學院長郭艷光主持
29-5 Solenoids and Toroids 彰化師大教學卓越－普物教材－理學院長郭艷光主持
29-6 A Current-Carrying Coil as a Magnetic Dipole 彰化師大教學卓越－普物教材－理學院長郭艷光主持
彰化師大教學卓越－普物教材－理學院長郭艷光主持 End of chapter 29! 彰化師大教學卓越－普物教材－理學院長郭艷光主持