Contextualization

The study of Magnetic Force in Charges plays a crucial role in understanding Physics, natural phenomena, and various current technologies. It is a field of Physics called Electromagnetism, which, in turn, is one of the four fundamental forces of nature, along with gravitational, strong nuclear, and weak nuclear forces. Electromagnetism governs the laws of the universe regarding the behavior of electric charges, both at rest and in motion, and their interactions with magnetic and electric fields.

The Magnetic Force is the interaction between a moving charge and a magnetic field, resulting in the famous action perpendicular to the direction of the particle's movement and the direction of the magnetic field, a concept that will be addressed and explored in depth in the proposed activities. Understanding it is vital for Physics and studies in areas such as Electrical Engineering, Computational Science, Telecommunications, and others.

Introduction

Studying concepts such as Magnetic Field, Magnetic Force, Electric Charges in Motion, and Perpendicular Directions is essential for a robust understanding of this topic. Understanding that a magnetic field is a region where a moving charge is subject to a magnetic force, we can connect this concept to Lenz's and Faraday's laws, which discuss magnetic induction and are fundamental for the development of electricity generation technologies.

The Magnetic Field, represented by the letter B, is established in a space where a charged body in motion can exert a magnetic force, which will be explored in the experimentation. The Magnetic Force, known by the formula F=q.v.B.sin(θ), is a vector quantity and has a direction perpendicular to the charge's velocity vector and the magnetic field vector.

The relationship between electric charge, magnetic field, and magnetic force is present in many of the technologies we use daily, demonstrating the practical relevance of understanding these concepts. For example, the magnetic resonance imaging device uses the magnetic field to align the spins of protons and create an image of the inside of the human body.

Practical Activity

Activity Title: "Exploring Magnetic Force in Electric Charges"

Project Objective

This project aims to develop a deep understanding of the concept of magnetic force in electric charges in motion in an atmosphere of collaboration and scientific investigation. After completion, students should be able to calculate the magnetic force, understand that it is perpendicular to the velocity and the magnetic field, and solve problems involving magnetic forces on electric charges.

Detailed Project Description

The project will be carried out in groups of 3 to 5 students, to be developed over at least four weeks, considering the complexity and depth of the topic.

The activity will consist of two main parts: a theoretical research and a practical experiment. In the first part, students should search and study in-depth references from books, websites, and videos (mentioned in the Resources section) on the concept of Magnetic Force in Electric Charges, magnetic field, and electric charge in motion. The second part will be the performance of a practical experiment, where students should visualize and measure the effect of magnetic force on an electric charge in motion.

Required Materials

For the practical activity, the following list of materials will be necessary:

• Magnets
• Compasses
• Copper wires
• Batteries
• Adhesive tape
• Ruler
• Electric charge (small metal spheres can be used)

Detailed Step-by-Step for Activity Execution

1. Theoretical Research (2 weeks): In this phase, students must delve into the theoretical material available in the recommended books, on the internet, and in YouTube videos. The research should be guided by the following questions: What is an electric charge? What is a magnetic field? What is magnetic force? How is it calculated? How does magnetic force behave in relation to the magnetic field and the charge's velocity?

2. Discussion and Experiment Preparation (1 week): After the study phase, students should discuss and plan the experiment. Having internalized the theoretical concepts, students should outline an action plan for the experiment, sharing responsibilities and tasks.

3. Experiment Execution (1 week): Students should follow the outlined plan and carry out the experiment. At this stage, a detailed record of each step, observations, and measurements should be made. This record will be used in the preparation of the final report.

4. Report Elaboration (1 week): Based on the collected data, students should construct a detailed project report, containing: introduction, development, conclusions, and bibliography. This report should address the worked concepts, the description and motivation of the experiment, the collected data, the drawn conclusions, and the sources consulted for the project.

Time management will be the responsibility of the students, thus stimulating time management skills. During discussions and report elaboration, it is expected that students improve their communication, problem-solving, and creative thinking skills.

Conclusion and Deliverables

At the end of the project, each group must deliver:

1. Complete Report: This document should contain all project details, including the introduction to the topic and its relevance, theoretical and practical development, obtained conclusions, and bibliographic references used in the project.

2. Oral Presentation: Each group must make an oral presentation of the project, explaining the process and answering possible questions.

This project aims to create a playful environment, stimulating curiosity and discovery through theoretical study and practical experimentation. In this way, it is expected that students develop technical skills, such as calculating and understanding magnetic force, but also important socio-emotional skills, such as time management, communication, problem-solving, and creative thinking.