JEE

The basic principle of the electromagnet is the electromagnetism. When the ferromagnetic iron core is coiled by a wire and a current is passed through the core, it produces a strong and magnetic field, and turns the setup into a magnet. By changing the current, one can change the strength of the magnetism, and when the current is switched off, the magnetism disappears.

The process of creating the electric current in a conductor by moving the conductor through the magnetic field or by changing the magnetic field around the conductor is known as the Electromagnetic Induction.

The common mistakes can be - using the formula incorrectly, before applying the formula students not simplify the expression, in Binomial Expansion, sometimes they forget to include the fractional and negative exponents, and using incorrect values for a, b, and n.

The Binomial model is known as the Lattice Model or Binomial Option Pricing Model.

There are a total of 36 questions comprising 14 straightforward formula-based sums, 16 challenging problems, and 6 intermediate.

Mathematically, binomial theorem formula is: (a + b)n = nC0 an + nC1 an - 1b + nC2 a n – 2b 2 + . + nCn – 1a.bn - 1 + nCn bn. Here a and b are real numbers and n is a positive integer.

An expression with two terms raised to a positive integer power can be expanded in Maths, such as (a + b)? This algebraic rule is known as the Binomial Theorem. 

Usually, there are 3–4 rounds of NCHMCT JEE counselling, followed by a spot round if seats remain vacant.

Yes, SNU does accept JEE Main scores for admission to its BTech course. The accepted entrance exams for BTech is only JEE Main. Hence, students must prepare well for the JEE Main in advance. For other details, please visit the official website of the university and apply for admission to various courses. 

The main topic of this chapter includes - Ampere's Circuital Law, magnetic field lines, and Gauss's Law.