![]() ![]() Basic and medium-level questions make up around 83 percent of the JEE paper, according to the allocation of levels of difficulty in the previous year’s tests. If you stick to this approach, your Physics preparation will be flawless, and you will breeze through this part. The solution of electric circuits can be achieved either by reducing a network of resistors to a simpler form by the laws governing resistors in series and parallel or by the use of Kirchhoffs laws. All you have to do is understand each topic’s concepts. This chapter describes Kirchhoffs laws, the theorem of superposition, Thevenins theorem, Nortons theorem, and the maximum power transfer theorem. The Oscillations and Waves chapter covers a wide range of topics and comprises 10% of the exam questions. Significance of superposition principle in IIT JEE exam ![]() When only one source is considered at a time, power dissipation is a nonlinear function that does not add up to an accurate total algebraically. Because linearity is required, the Superposition Theorem can only be used to calculate voltage and current, but not power. Non-linear circuits are not covered by the theorem. The theorem of Superposition’s Limitations After you’ve gotten the replies for each individual source, add them all up to get the voltage level drop or current via the circuit element.The same applies to all other sources in the circuit when evaluating a single source.Evaluate the current that flows through or the voltage drop across a specific network node using a network simplification approach.All sources should be substituted by their internal impedance, with the exception of the specified source.Any one of the circuit’s multiple sources can be taken into consideration initially. The initial step is to choose one source among the many available in the bilateral network.Superposition Theorem and how does it work When there are a lot of changes in a system, the superposition principle comes in handy. The net flux, net field, and net potential energy of the system are estimated using the superposition concept. The resulting electric field is a vector sum of the individual charges’ electric fields. It is not applicable to the circuits consisting of less than two independent sources.According to the concept of superposition, every charge in space generates an electric field at a specific spot, regardless of the presence of additional charges in the medium.Also not applicable for calculation of power ,as the power is proportional to the square of current or voltage(non-linear).It is not applicable to the circuits consisting of non-linear elements like diode, transistor etc.It does not apply to circuits containing only dependent sources.It is useful in circuit analysis for finding the values of current and voltage in any branch of the circuit, when the circuit has large number of independent sources. ![]()
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