Open App

Class 7 Exam > Class 7 Videos > Science Class 7 (Old NCERT) > Magnetic Effects of Electric Current

Magnetic Effects of Electric Current Video Lecture | Science Class 7 (Old NCERT)

FAQs on Magnetic Effects of Electric Current Video Lecture - Science Class 7 (Old NCERT)

1. What are the magnetic effects of electric current?

Ans. The magnetic effects of electric current refer to the phenomena where an electric current produces a magnetic field around it. This magnetic field can interact with other magnets or magnetic materials, resulting in various effects such as attraction, repulsion, and the creation of magnetic fields.

2. How does an electric current produce a magnetic field?

Ans. When an electric current flows through a wire, it creates a circular magnetic field around the wire. The direction of the magnetic field can be determined using the right-hand thumb rule, where if we hold the wire with our right hand and point the thumb in the direction of the current, the curled fingers will indicate the direction of the magnetic field lines.

3. What are the applications of the magnetic effects of electric current?

Ans. The magnetic effects of electric current have various practical applications. Some of the common applications include electric motors, generators, transformers, electromagnetic cranes, magnetic levitation trains, and magnetic resonance imaging (MRI) machines in the medical field.

4. How does an electric motor work based on the magnetic effects of electric current?

Ans. An electric motor works on the principle of the magnetic effects of electric current. When an electric current passes through a coil placed in a magnetic field, it experiences a force due to the interaction between the magnetic field and the current-carrying coil. This force causes the coil to rotate, which is utilized to convert electrical energy into mechanical energy, resulting in the functioning of an electric motor.

5. What is the role of magnetic fields in transformers?

Ans. Transformers utilize the magnetic effects of electric current to transfer electrical energy from one circuit to another. The primary coil of a transformer is connected to an alternating current (AC) source, which produces an alternating magnetic field. This magnetic field induces an alternating current in the secondary coil, allowing the transfer of electrical energy between the two circuits. Transformers are essential in transmitting electricity efficiently over long distances and changing the voltage levels for various applications.

About this Video

4.6K Views

4.90/5 Rating

Sep 03, 2025 Last updated

Related Exams

Class 7 Class 8 Grade 9 Grade 7

Video Description: Magnetic Effects of Electric Current for Class 7 2025 is part of Science Class 7 (Old NCERT) preparation. The notes and questions for Magnetic Effects of Electric Current have been prepared according to the Class 7 exam syllabus. Information about Magnetic Effects of Electric Current covers all important topics for Class 7 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Magnetic Effects of Electric Current.

Introduction of Magnetic Effects of Electric Current in English is available as part of our Science Class 7 (Old NCERT) for Class 7 & Magnetic Effects of Electric Current in Hindi for Science Class 7 (Old NCERT) course. Download more important topics related with notes, lectures and mock test series for Class 7 Exam by signing up for free.

Description

Video Lecture & Questions for Magnetic Effects of Electric Current Video Lecture | Science Class 7 (Old NCERT) - Class 7 full syllabus preparation | Free video for Class 7 exam to prepare for Science Class 7 (Old NCERT).

Information about Magnetic Effects of Electric Current

Here you can find the meaning of Magnetic Effects of Electric Current defined & explained in the simplest way possible. Besides explaining types of Magnetic Effects of Electric Current theory, EduRev gives you an ample number of questions to practice Magnetic Effects of Electric Current tests, examples and also practice Class 7 tests.

	Science Class 7 (Old NCERT) 111 videos\|435 docs\|28 tests

Science Class 7 (Old NCERT)

111 videos|435 docs|28 tests

Join Course for Free

Explore Courses for Class 7 exam

Important questions

Summary

pdf

mock tests for examination

Semester Notes

Magnetic Effects of Electric Current Video Lecture | Science Class 7 (Old NCERT)

study material

Extra Questions

Magnetic Effects of Electric Current Video Lecture | Science Class 7 (Old NCERT)

video lectures

Exam

MCQs

Viva Questions

Free

past year papers

Objective type Questions

shortcuts and tricks

practice quizzes

ppt

Sample Paper

Previous Year Questions with Solutions

;

Study Magnetic Effects of Electric Current on the App

Students of Class 7 can study Magnetic Effects of Electric Current alongwith tests & analysis from the EduRev app, which will help them while preparing for their exam. Apart from the Magnetic Effects of Electric Current, students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc. The EduRev App will make your learning easier as you can access it from anywhere you want. The content of Magnetic Effects of Electric Current is prepared as per the latest Class 7 syllabus.

Education Revolution