# Magnetic Effects of Electric Current Notes

## Magnetic Effects of Electric Current Notes

Contents

In the previous grades, you have already read about the different effects of Electric current such as its chemical effect and heating effect. In class 10 we will study the Magnetic Effects of Electric Current. In this article, we will provide you with the best Magnetic Effects of Electric Current Notes that will surely help you fetch good marks in your upcoming CBSE Board Exam and of course in other exams too.

Let us first discuss the topics that we will study in Class 10 Magnetic Effects of Electric Current. We can divide the chapter into two parts- Part 1 and Part 2.

Here is the list of topics we will study in Class 10 Magnetic Effects of Electric Current Notes-

Part – 1

• Introduction/History
• Magnetic Field
• Magnetic Field Lines
• Magnetic Field due to a Current-Carrying Conductor
• Magnetic Field due to Current through a straight Conductor
• Right-hand thumb Rule
• Magnetic Field due to Current through a Circular Loop
• Solenoid
• Electromagnet

Part – 2

• Force on a current-carrying conductor in a Magnetic Field
• Fleming’s Left-hand Rule
• Electric Motor
• Electromagnetic Induction
• Fleming’s Right-hand Rule
• Electric Generator
• Domestic Electric Circuits

### Introduction

It was Hans Christian Oersted who accidentally in the year 1820 (while setting up his apparatus for lecture demonstration) discovered that when an electric current is passed through a conductor, a magnetic field is produced around it.

Later in the same year (1820) before the end of September, another scientist who was very fascinated by Oerested’s discovery, Andre-Marie Ampere found that two current-carrying wires when kept parallel to each other move towards each other (current in the same direction) and also move away from each other (current in the opposite direction). He also found that a cylindrical coil of wire behaves as a bar magnet when current is passed through it.

Another breakthrough came when in 1831, Michael Faraday found that a changing magnetic field can give rise to an emf (electromotive force). A current is induced in a conducting loop when a magnet is moved across the loop.

Question: Who was the first scientist to discover that a current-carrying wire acts as a magnet?