JEE

Students can expect conceptual questions on Faraday's and Lenz's Laws, derivations involving EMF, flux calculations, and application-based questions like the functioning of generators or transformers. Numerical problems involving   and time-varying magnetic fields are also frequently included.

Lenz's law is used for devices like eddy current brakes, induction cooktops, and metal detectors. For example in induction cooktops, the currents in the cookware are induced by the changing magnetic fields. It generates the heat due to resistance. It is based on Lenz's law which follows the opposing nature of the induced current.

The negative sign in Faraday's Law of Electromagnetic Induction is extremely significant as it gives the direction of the induced EMF. Faraday's law is based on Lenz's law which reflects the principle of conservation of energy. It says that the induced EMF always opposes the magnetic flux changes that cause it. Following is the Faraday's law equation:

There are more than 180 BTech Mechatronics Engineering colleges in India, out of which around 65 colleges accept students on the basis of JEE Main exam scores for admission. You need to work really hard to get an excellent score and rank in the exam to get a seat at top colleges. A few colleges that accept the JEE Main exam scores include Thapar University, LPU, SASTRA University, NIT Patna, and Manipal University (Jaipur).