JEE Advanced Work Energy and Power Important Questions

As you know, energy is the capacity to do work, and it is denoted by E. Energy can take many forms such as chemical energy, electric energy, nuclear energy, etc. All forms of energy can be converted into other forms of energy and vice versa. For example, mechanical energy can be converted into electrical energy. Work Energy and Power is an important topic in JEE Advanced Physics. This chapter tests your understanding of the concepts and not just your ability to solve problems. The questions are of varying difficulty levels. Make sure you are thorough with all of them. Students who are preparing for JEE Main must also download the important questions to get an idea of the questions that are expected in their JEE Main examination. The chapter explains the topics that you must know in the examination.

What is Work?

The work done by a constant force F on an object to move it through a distance of d is given by the equation,

Work W = Force x Distance moved or W = Fd.

Here, force means any agent that produces a change in the state of rest or motion of an object, and distance travelled is measured as the total displacement of the object. You can use the concept of work in daily life to measure how much energy you are exerting in performing different tasks. 

What is Energy?

Energy is the capacity to do work or transfer from one form to another. Energy can be described as the ability of a body to do work on another body or do work by means of another body. It is the ability that a body has because of its motion to produce changes in itself or in other bodies. Students must know that work can be transformed into energy. For example, when a ball falls from a height, it possesses potential energy, and when it is at the bottom of a hill, it has kinetic energy.

Energy is a scalar quantity, and its SI unit is joule or J.

What is Power?

Power is the rate at which work is done. It is denoted by P and defined by,

P = Work/Time taken to do the work

It means a large amount of a form of energy can be converted into a smaller amount of another form in a shorter time interval. This is the reason that power is useful to understand in our daily lives. For example, you can run a car with very little fuel. It takes a long time to power the vehicle, and that is why cars run with high fuel efficiency. 

Work Energy and Power Important Questions for JEE Advanced

JEE Advanced important questions of work energy and power are formulated after careful and thoughtful consideration by our experienced tutors at Vedantu. In this chapter, students will learn about how notions and measurements can be utilized to define and predict the motion and behaviour of bodies. The most important concepts in this unit are Kinetic energy, Electric power, and Potential energy, which are explained along with examples. Examples of work done by variable force when an Equation of Path is given and also examples of work done by internal and external forces are mentioned along with the supportive diagrams which help the students to have a tactful idea of the complete concept. 

This unit is pivotally essential for any student to have very strong fundamentals in Physics for students who wish to pursue a career in engineering be it mechanical, electrical or computers. Work, energy and power are very subjective and insist students write accurate answers to questions posed to them.