/ Preparation Physics Electromagnetic Induction
Motional EMF is referred to the difference occurring in the conductor when moved through a magnetic field. When we move the conductor through a magnetic field, the free charges experience a magnetic push, which leads to the production of voltage. This law is a direct result of faraday’s law of electromagnetic induction and is one of the most crucial topics of the chapter electromagnetism. Candidates who are considering preparing for JEE MAINS should definitely go through every core detail of this concept.
For further details, you can continue scrolling!
- Basic Concept
- Mathematical Formula
- Real-World Applications
- Physics Class 12 NCERT Solutions
Basic Concept
Suppose a conductor is moved through a magnetic field. The free charges (electrons) in the conductor will start to experience a magnetic force known as Lorentz force. This force will push them towards one end of the conductor. Due to this movement, a potential difference called motional EMF is created which leads to the production of voltage.
This magnetic field helps in the production of electricity that can be used in various day to day scenarios.
Mathematical Formula
This motional EMF can be represented by the general equation:
E=(v×B)⋅l
Where,
E: Motional EMF
V: Velocity
B: Magnetic Field
L: Length of the conductor
Note: In cases where l is perpendicular to both v and b, the formula is denoted as:
E=Blv
Real-World Applications
This isn’t just limited to theory. The concept of Motional EMF has a wide range of uses in our day to day used appliances, some of which are as follows:
- Generators and motors
- Railguns
- Magnetic Meters
- Aeroplanes
- Wind Turbines
- Powerplants
Physics Class 12 NCERT Solutions
| Sl. No |
Name of Chapter |
|---|---|
| 1 |
|
| 2 |
|
| 3 |
|
| 4 |
|
| 5 |
|
| 6 |
|
| 7 |
|
| 8 |
|
| 9 |
|
| 10 |
|
| 11 |
|
| 12 |
|
| 13 |
|
| 14 |
Semiconductor Electronics: Materials, Devices and Simple Circuits |
Physics Electromagnetic Induction Exam
Student Forum
Anything you would want to ask experts?Other Topics under this Chapter
- Potential Energy of a System of Charges
- Lenz's Law and Conservation of Energy
- Inductance
- AC Generator
- Magnetic Flux
- Faraday Law of Induction
- Experiments of Faraday and Henry
- Motional Electromotive Force
- Combination of Capacitors
- Parallel Plate Capacitor
- Electrostatics of Conductors
- Electromagnetism
- Torque on current loop, magnetic loop dipole
- Moving Coil Galvanometer
- Force between two parallel currents, the Ampere
Other Class 12th Physics Chapters
- Physics Alternating Current
- Physics Ray Optics and Optical Instruments
- Physics Electromagnetic Induction
- Physics Dual Nature of Radiation and Matter
- Physics Semiconductor Devices
- Physics Wave Optics
- Physics Current Electricity
- Physics Nuclei
- Physics Electrostatic Potential and Capacitance
- Physics Atoms
- Physics Moving Charges and Magnetism
- NCERT Class 12 Notes
- NCERT Class 12 Physics
- Physics Electric Charge and Field
- Physics Electromagnetic Waves
- Physics Magnetism and Matter
Popular Courses After 12th
Exams accepted
CA FoundationExams accepted
ICSI ExamExams accepted
BHU UET | GLAET | GD Goenka TestBachelor of Business Administration & Bachelor of Law
Exams accepted
CLAT | LSAT India | AIBEExams accepted
IPMAT | NMIMS - NPAT | SET
Exams accepted
BHU UET | KUK Entrance Exam | JMI Entrance ExamBachelor of Design in Animation (BDes)
Exams accepted
UCEED | NIFT Entrance Exam | NID Entrance ExamBA LLB (Bachelor of Arts + Bachelor of Laws)
Exams accepted
CLAT | AILET | LSAT IndiaBachelor of Journalism & Mass Communication (BJMC)
Exams accepted
LUACMAT | SRMHCAT | GD Goenka Test