NCERT

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

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 th

Magnetic susceptibility (? ) measures in an external magnetic field, how much a material gets magnetized.Paramagnetic materials:? is positive but small.
Diamagnetic materials:? is negative and very small.
Ferromagnetic materials:? is positive and large, often many orders of magnitude greater than 1.

Any bar magnet which is freely suspended aligns itself with the Earth's magnetic field. Earth attract the north pole of the suspended magnet because earth behaves like a giant bar magnet with a magnetic south pole near the geographic North Pole.

The magnetizing force applied to a material is called the Magnetic intensity (H) and the total magnetic effect inside a material is called the magnetic field (B), it includes both the applied magnetic field and the material's response (magnetization).
Following is the formula showing the relation:
B =

No, ICSE or CISCE board does not follow the NCERT books or syllabus. Students from the ICSE board have to follow the books and the curriculum set up by the Council for the Indian School Certificate Examinations (CISCE). 

These books explain the concepts and theories with deep knowledge and the a

It is advisable that students first start with the NCERT textbook to understand the concepts and then practice the NCERT exemplars to master the concepts and understand where and how to use the concepts and formulas for solving various kinds of problems. As the exemplar includes all type of question

Practicing the NCERT Exemplar problems helps in deepening the conceptual understanding of Chapter 4. These questions are designed to test the conceptual application and higher-order thinking. The solutions are given by the subject matter experts of Shiksha and practicing these strengthens the unders

NCERT Exemplar goes beyond the NCERT textbook as it contains questions based on the textbook concepts. While practicing the short answer type questions, long answer type questions, and multiple choice questions, students learn how to use these concepts for solving problems. It will help students imp