Agenda today 1.Biot-Savart-Laplace Law 2.the application of Biot-Savart-Laplace Law 3.Ampere's Law 4.The magnetic field of toroid and solenoid Agenda today 1. Biot-Savart-Laplace Law 2. the application of Biot-Savart-Laplace Law 3. Ampere’s Law 4. The magnetic field of toroid and solenoid