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While the date for JEE 2017 approaches close, the time for efficient revision has finally arrived. By the end of November 2016, you should be done with the entire syllabus so that you can head towards revising and polishing your skills. Of course, there are some chapters which are always difficult for some of us while others whose codes we crack quickly. But this should not be the subject of worry for you as now is the right time to revisit chapters you failed to build a concrete concept on. For those who will be attempting JEE in 2018, this article about Electricity and Magnetism will prove useful to you too! Of the important chapters of Physics in the JEE syllabus, Electricity and Magnetism hold the paramount position among a few others, in matters of concepts, skills and difficulty level of numericals.

Electricity and Magnetism: The Twins

‘Electricity and magnetism’ is one of the crucial topics in the JEE syllabus, both in terms of difficulty as well as weightage. If you have a strong hold over this topic, you can be assured of scoring well overall. But again, if you know it well, you would also know that things can get tricky if taken for granted. Hence, before you tackle Electricity and Magnetism, it is essential to have certain things in mind before attempting the questions from this part of the JEE Main syllabus.

  • Strengthen your memory bank

    It is a prerequisite that you should know by heart all the derived results and formulas from Electricity and Magnetism as you will not have enough time to derive them during the examination. That said, it is of absolute importance that you know the origins of the formula as JEE requires a lot more than inserting values into a formula. You should have a fair idea of what the formula is all about, the terms involved in it and when it can be applied. There are several formulas in Electricity and Magnetism which have conditions applied to their usage, especially those involving vectorial components.

  • Grasping the concept

    This bullet point could be the motto for JEE instead of just for Electricity and Magnetism, for without a proper grasp of the subject you cannot solve questions carefully crafted for JEE. Before you tackle a numerical, you must be well aware of the concept and its applications along with the proper usage of the formulas. Instead of trying to think which formula is applicable straightaway, you should first get a clear understanding of the problem. This will prevent you from committing a mistake in case there’s a twist in the problem (which is usually the case).

  • Kirchoff’s and Biot-Savart’s laws: The spine

    Most of the questions from the Electricity part of the chapter are based on Kirchoff’s laws. You must excel in applying them, as there are individual assumptions, for each law, on the direction of current and potential drop (or gain). JEE (Main) will surely have such question as has been the trend for several years.

    The Magnetism of Electricity and Magnetism focuses more on conceptual understanding than clever questions for there isn’t much scope for tricky questions here. The Magnetism part consists mainly of applications of the Biot-Savart’s law. Questions based on just these are way too easy and have fewer chances of appearing. The thing is that they constitute complex questions with calculations of other parameters such as torque and P.E.

  • Mastering LCR Problems

    For LCR circuit questions in Electricity and Magnetism, you need to know what the circuit will look like at t=0 and at t=∞. Many questions don’t require rigorous calculations if you can figure out the initial and final conditions. In extreme cases, the question may arise for anytime, say t. Then you must know how to proceed further using the fundamentals.

  • Leave no stone unturned

    Due to exclusion from Jee (Advanced) syllabus, there are several minute conceptual questions from Electricity and Magnetism which students fail to attempt in JEE (Main). Questions are often asked on topics as insignificant as magnets and as complex as Wheatstone and meter bridge. But if your concepts are clear, these are easy enough and can be easily cracked. Sometimes, theory questions may also be asked which are somewhat tricky.

Have these tips in mind when you encounter any of the questions from Electricity and Magnetism. You must polish your skills through regular practice from the toppr test series to gain confidence in the topic. While most type of questions that have been asked over the past years have been covered, some topics may have been left out considering their rarity in the question paper.

Go through our tried and tested tips for JEE Main to strengthen your preparation. The finish line is in sight now! Don’t relent, keep going strong! All the best for JEE Main 2017!  

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