Understanding: Work, Energy, and Power
In Physics, Work, power, and energy are the most widely used terms and concepts. They are very renowned and are often asked in exams. These topics are easy to understand but difficult to solve if you do not prepare. Let us look at a couple of factors you can go through while starting this chapter.
It is necessary to exert force and move or displace in the direction of the force for work to be accomplished. It is calculated that a force acts on an object by multiplying its magnitude by the distance moved by it.
There is the only magnitude and no direction to Work. This means that Work is a scalar quantity. Work is said to be done when someone climbs the stairs of his house or office. Work is calculated by multiplying force by displacement of the body along the direction of the force. It is a scalar quantity whose SI unit is the joule.
By reading through the Work, Energy and Power MCQ for NEET, you can be better prepared for the exam.
How do you define energy?
Energy refers to the ability to perform the Work. It is impossible to create energy, nor can it be destroyed. The law of conservation of energy states that energy can only be transformed from one form to another. The same unit measures energies as Work, that is, Joules. There are many types of energy as well as many different types of things that produce energy.
It is impossible to define a form of energy that is not kinetic or potential. Keep in mind that Kinetic Energy is the energy used when moving an object, while Potential Energy is energy stored within an object and is measured by the amount of work done.
What is Power?
Depending on the context and information available, power can have many different meanings. Essentially, power is the amount of energy consumed per unit of time, and it is defined as the rate at which work is done.
Power is a scalar quantity since it does not have a direction. A power unit that is commonly used is a Joule per Second (J/s), often called a Watt.
Power can be defined as the amount of force needed to accomplish one joule of Work in one second. As a homage to Sir James Watt, who developed the steam engine, the unit Watt has been named.
A number of questions have to do with power and energy in the workplace. The following section of this article will discuss some energy and power topics from NEET-UG physics.
Marking scheme of NEET exam pattern 2021
Aspirants can know how the marks will be allotted following the NEET examination by reading through the NEET 2021 marking scheme.
- NEET will award four marks for each correct answer, and one mark will be deducted for every wrong one.
- According to the NEET exam pattern 2021, there is no negative marking if a candidate leaves a question unattempted.
- The NEET 2021 OMR sheet cannot be changed once aspirants have marked it.
- We recommend that candidates avoid attempting multiple answers during the NEET exam since this will result in negative marks.
Multiple Choice Questions (MCQs) are the most useful and widely applicable as a common form of objective test elements. The most important educational outcomes can be measured with these instruments, such as understanding, knowledge, and judgment.
We can successfully attempt competitive exams like NEET if we prepare these MCQs after taking each of the topics once. Therefore, prepare meticulously and practice to ace the exam.
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