التأثير المغناطيسي للتيار الكهربي وأجهزة القياس (للبالغين)

This course is designed for parents, teachers, and students aged 18+ looking to master the principles of electromagnetic effects of electric current. We'll take a structured approach: explanation, problem-solving, review & summarization, and extensive practice with a wide range of exercises, including challenging problems. All material is based on the official textbook provided by the Ministry, ensuring accuracy and relevance.

You'll gain a deep understanding of the magnetic field created by electric current – its shape, direction, and intensity. We'll explore the factors influencing these aspects and learn how to deduce physical laws without rote memorization. You'll also become proficient in understanding units and angles, and the fundamental workings of various electrical devices. We'll break down each component and how it contributes to the overall function.

Expect significant mathematical application and a strong emphasis on connecting concepts throughout the course. We'll focus on efficient learning strategies to achieve optimal results with minimal effort. This includes understanding problem-solving techniques, step-by-step approaches, and shortcuts for quick and accurate answers.

Key topics covered include:

• Hans Christian Ørsted's Experiment: Discovering the magnetic effect of electric current using a compass.
• Magnetic Field Shapes: Investigating magnetic field patterns around a straight wire, coil, and solenoid.
• Magnetic Flux Density: Deriving the laws and understanding the principles.
• Right-Hand Rules: Mastering the right-hand rules for determining direction of magnetic field and current (Ampere's and Fleming's).
• Magnetic Force on a Current-Carrying Wire: Analyzing the force experienced by a wire in a magnetic field.
• Force Between Parallel Wires: Understanding the interaction between two parallel wires carrying currents.
• Torque of a Rectangular Coil: Deriving the torque law and relating it to a dipole moment.
• Dipole Moment: Determining the direction of the dipole moment.
• Galvanometer, Ammeter, Voltmeter, and Ohmmeter: Detailed exploration of these measuring instruments.
• Circuit Analysis: Building circuits, drawing diagrams, and applying laws to analyze current dividers, voltage multipliers, and calculating unknown resistances, including resistivity.