CBSE Class 10 Science Revision Notes Chapter 13

CBSE Class 10 Science Revision Notes Chapter 13 – Magnetic Effects of Electric Current

The Class 10 Science subject comprises several chapters. One such chapter is Chapter 13 – Magnetic Effects of Electric Current. Students have to work hard in order to score better in board examinations. Thus, Extramarks has provided Class 10 Science Chapter 13 Notes to understand the basic and advanced concepts of Magnetic Effects of Electric Current. They are formulated in a manner that can help candidates to understand the topics easily. Simple language is used by the experts so that students can learn the topics without any difficulty. 

Candidates of Class 10 can rely on the notes as they are created according to the CBSE guidelines and NCERT Books. Science is one of the most scoring subjects so candidates should practise it properly. One can also access other materials such as CBSE sample papers, CBSE previous year question papers, CBSE extra questions and important questions from the Extramarks website. 

CBSE Class 10 Science Revision Notes for the Year 2022-23

Sign Up and get complete access to CBSE Class 10 Science Chapterwise Revision Notes for the following chapters:

CBSE Class 10 Science Revision Notes
Sr No. Chapters
1 Chapter 1 – Chemical Reactions and Equations
2 Chapter 2 – Acids, Bases and Salts
3 Chapter 3 – Metals and Non-metals
4 Chapter 4 – Carbon and Its Compounds
5 Chapter 5 – Periodic Classification of Elements
6 Chapter 6 – Life Processes
7 Chapter 7 – Control and Coordination
8 Chapter 8 – How do Organisms Reproduce?
9 Chapter 9 – Heredity and Evolution
10 Chapter 10 – Light Reflection and Refraction
11 Chapter 11 – Human Eye and Colourful World
12 Chapter 12 – Electricity
13 Chapter 13 – Magnetic Effects of Electric Current
14 Chapter 14 – Sources of Energy
15 Chapter 15 – Our Environment
16 Chapter 16 – Management of Natural Resources

CBSE Class 10 Science Chapter 13 – Magnetic Effects of Electric Current Revision Notes

Access Class 10 Science Chapter 13 – Magnetic Effects of Electric Current


A magnet is a material that can attract metals such as iron, nickel, cobalt, etc. The poles of the magnet are north and south. 

Magnetic Field:

  • A magnetic field is known as the area around the magnet where its influence can be experienced by any other magnetic object. 
  • It is measured in a unit called Tesla. 
  • At the Earth’s poles, the magnetic field strength is greatest where the magnetic lines are nearest. 
  • The tangent at an area indicates the direction of the magnetic field at that point. 

Natural Magnet:

Magnetite or Lodestone is a naturally occurring black iron ore which is a natural magnet. 


Inside the solenoid, the lines are in the shape of parallel straight lines. This indicates that the magnetic field inside the solenoid is the same in all directions. Therefore, it means that the field inside a solenoid is uniform. 

Permanent Magnets:

A magnet retains its magnetic properties after its magnetisation. It is a common property of steel. 

Electromagnetic Induction (EMI):

  • EMI is a phenomenon in which emf is induced in a particular conductor due to a change in the magnetic field around the conductor. 
  • Michael Faraday was the first to demonstrate that a magnet can generate current. 
  • He provides this by moving a magnet in front of a coil of wire linked to a galvanometer. 
  • The induced current is generated by the relative motion of the coil and magnet. 

What Causes Mutual Induction?

  • When an individual hits the key K, the current begins to flow through the coil, increasing the magnetic flux. 
  • As S is closed to P, the magnetic flux associated with S also increases. 
  • The presence of induced emf in the secondary coil during the make or break of current in the primary coil is known as mutual induction. 


The main components of an AC generator are as follows:

A magnet with concave cylindrical poles, an armature and a current collecting system is used to make an AC generator. 

  • The armature is a soft iron core around the coil made of insulated copper wire with many turns. The poles are cylindrical and concave. 
  • The ends of the armature are joined by two slip rings. 
  • There are two carbon brushes, B1 and B2. Each brush has one end connected to an external circular, and the other one is in touch with slip rings. Then brushes are linked to the galvanometer and do not revolve with the coil. 


  • The armature will change its relative orientation with the magnetic field as it rotates along the perpendicular axis to the field. 
  • The flux will constantly alter over time. 
  • An emf will be produced by the shift in the magnetic flux. 
  • An electric current will pass through the armature if the outer terminals are lined to the external circuit. 
  • The galvanometer needle deflection shows that emf has been induced. 
  • As a result, the current changes its direction in one coil revolution. 

DC Generator:

  • One-way energy is generated in a DC generator. 
  • To achieve this, slip rings are replaced with split rings. 
  • Alternating current

Direct Current:

Direct current occurs when the current flows in the same direction. The current generated by a cell or a battery is a single way. Hence, it is a DC source. 

Domestic Electric Circuits:

The typical electric power is generated in remote locations. 11,000 volts of energy are created at the generating stations. This voltage alternates at a 50 Hz frequency. 

Domestic Wiring:

The three wires that bring electricity to our homes are known as earth wire, neutral wire and live wire. Colour code is used to insulate these wires and minimises confusion. The live wire is red, and the neutral one is black. The earth cable is insulated using green plastic. The live wire has 220 volts of potential, and the neutral one has no potential. The potential difference between these two wires is 220 volts. 

Electric Fuse:

  • A device that limits the current in an electric circuit is known as an electric fuse. The fuse is used to protect the circuit and electronic equipment from damage. 
  • The wire used in fuses is made up of a lead and tin alloy. 
  • In the beginning, these wires are connected in series. 
  • The fuse wire gets heated and melts when the current exceeds its capacity resulting in short-circuiting. 

Causes of Damage to Electric Circuits:

  • Overloading: When many high-power electrical appliances are turned on at the same time, the circuit will draw a massive current at the same time. This is known as overloading and leads to overheating of the wire. 
  • Short-circuiting: If live and neutral wires of a circuit come in direct touch, a short circuit occurs. 

Comprehensive Question Wise Class 10 Science Notes

The Class 10 Magnetic Effects of Electric Current notes are comprehensive notes that cover all topics as per the CBSE syllabus. The notes will help the candidates in understanding the concepts properly so that they can prepare for the board examination. All the CBSE revision notes are created by subject experts so students can rely on them for final exam preparation. 

Class 10 Science Magnetic Effects of Electric Current Chapter 13

Significance of CBSE Class 10th

The significance of Class 10 Chapter 13 notes is given below for candidates. If you want to prepare for the board examinations, then read ahead. 

Helps You in Deciding the Career Path

The Class 10 examinations are one of the most important as they help in deciding streams for further career development. If you want to enter the medical and non-medical fields, then properly study the concepts of Physics as they are required in the competitive examinations also. 

Showcases Your Academic Achievements

The Class 10 examination shows the academic excellence of students. Candidates can use the mark sheet of Class 10 on their resume to showcase their qualifications and skills. Hence, it is important that students should study from the start of the academic session properly to score well in board examinations. 

Helps Students in Better Exam Preparation

The Class 10 Chapter 13 notes will help students prepare for the board examinations properly. Simple language is used so that students can understand advanced and difficult topics easily. Candidates can refer to these notes for board examination preparation, as they are created according to guidelines given by the CBSE board. 

Helps You Know Your Level and Capabilities

Different types of study material such as revision notes, CBSE sample papers, CBSE previous year question papers, etc are available on the website of Extramarks for candidates to refer to. Students should practice them properly to know their level of preparation and capabilities. 

Class 10 Physics Magnetic Effects of Electric Current Notes

The Magnetic Effects of Electric Current is an extremely significant chapter for Class 10 students. Candidates should study it properly as it demands proper attention and knowledge. One can access the revision notes of Chapter 13 from the website of Extramarks. They can get all the answers to NCERT textbook questions if they refer to revision notes. All the topics are designed from the examination point of view so that students can get a clear-cut idea about the type of questions asked in the final examination. 

Revision Notes Followed Up With the NCERT Guidelines

All the revision notes available on the website of Extramarks are created according to the NCERT guidelines. One should refer to the NCERT books and Class 10 notes to score well in the examination. The study material available are curated specially for students preparing for the board examinations.

Overview of the Magnetic Effects of Electric Current CBSE Class 10 Chapter 13 Science

Given below is a detailed overview of Chapter 13, Magnetic Effects of Electric Current. 

  • Domestic electric circuits 
  • Electric generator 
  • Electromagnetic Induction
  • Electric Motor
  • Force On A Current Carrying Conductor In A Magnetic Field
  • Magnetic Field Due To A Current Carrying Conductor
  • Magnetic Field And Field Lines
  • Magnetic Effects Of Electric Current


Chapter 13 of Class 10 deals with the magnetic properties due to the presence of electricity. The subtopics discussed are: the magnets and properties related to them, the magnetic field and points around it, etc. In addition, students will learn about how an electric wire will act as an agent. 

Magnets & Magnetism

  • Different kinds of magnets are available such as iron, cobalt, etc., which have attraction properties. 
  • Gold, and aluminium, are natural magnets whereas several U-shaped, rectangular pieces, compass, needles, etc are man-made magnets. 

Some Common Facts About Magnets Are

  • A magnet aligns in the north-south direction whenever suspended freely. 
  • Opposite poles of a magnet will always attract each other and like ones always repel. 
  • The magnet always exists as a dipole. 
  • A magnet cannot be separated even after being cut. 

Magnetic Field and Field Lines

  • A magnetic field is a quantity having both magnitude and direction. 
  • The direction of field lines is from the south pole to the north pole inside a magnet. 
  • The magnetic field lines inside a magnet are closed curves. 
  • The degree of closeness of the field lines derives from the relative strength of the magnetic field. 

The Concept of Magnetic Field Due to a Current Through a Straight Conductor

Chapter 13 notes depict the phenomenon of a magnetic field through a straight conductor. If the current increases, the magnitude will also increase. In addition, these notes explain that the magnetic field around the current carrying straight wire turns bigger as we move away from it. 

The Right-Hand Thumb Rule

One can understand the right-hand thumb rule from the Chapter 13 notes available on the website of Extramarks. It is one of the easiest ways to find the direction of the magnetic field correlated with the current-carrying conductor. 

Magnetic Field Due to a Current Through a Circular Loop

The concentric circle showing the magnetic field will turn bigger and bigger as we move away from the wire at each point of the current carrying loop. At the time it will reach the middle of the loop, the arcs will be straight lines. 

Magnetic Field Due to a Current in a Solenoid

One can find through the notes that the magnetic field is identical at all points inside a solenoid which indicates that the field is uniform inside it.  

Force on a Current-Carrying Conductor in a Magnetic Field

One can find through the notes that the current-carrying aluminium rod produces force when placed in a magnetic field. It states that the direction of the force will get reversed when the direction of the current through the conductor is reversed. 

Electric Motor

A rotating device that can transfer electrical energy into mechanical energy is known as an electric motor. 

Electromagnetic Induction – Repeated 

Electric Generator

The device through which the motor power is changed into electrical power is known as an electric generator. Wind turbines, engines, steam turbines, etc. are sources of mechanical energy. 

Expert Teachers Curating Class 10 Notes

All the revision notes of Class 10 are curated by the experts according to instructions given by the CBSE so candidates can refer them for board examination preparation. Simple language and techniques are used in the notes so that candidates can understand the advanced concepts easily. In addition, numerous study materials such as past year question papers, sample papers, important questions etc. are available on the official website of Extramarks that students can access easily. 

Liberty to Have One on One Session With Top Academic Experts

If students choose the website of Extramarks for board examination preparation they can have an opportunity to have one-on-one sessions with experts. It will help them in clearing their doubts and in understanding the concepts properly. Students can access detailed solutions and step-by-step information related to these concepts. 

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FAQs (Frequently Asked Questions)

1. What is a magnet?

A magnet refers to a material that can produce a field which can attract or repel other similar materials having magnetic nature.

2. What are magnetic field lines?

The imaginary lines that will depict the magnetic field for a given magnet are known as magnetic field lines.