# Electromagnetic Induction And Alternating Current Class 12 Pdf

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## Electromagnetic Induction Class 12 Notes

Notes for Electromagnetic Induction chapter of class 12 physics. However, magnetic flux is a real physical quantity. The flux will be maximum, if , i. If the area lies along the direction of i. Consider a cylinder of radius R placed in a uniform field , as shown. The flux for the right-hand end surface is But for the left-hand end surface, it is.

Time: 3 hrs. Max Marks: Chapter—1: Electric Charges and Fields. Chapter—2: Electrostatic Potential and. Current Electricity. Chapter—3: Current Electricity.

## CBSE Class 12 Physics Electro Magnetic Induction And Alternating Currents Notes

First Law: When magnetic flux linked with the conductor changes, induced emf produces across it. Second Law:. The magnitude of the induced e. The direction of induced current or the polarity of the induced e. Lenz law obeys the principle of energy conservation. It produces across the ends of the rod.

conclusively that electric currents were induced in closed coils when subjected to The phenomenon of electromagnetic induction. Chapter A high frequency alternating current is passed 12 is called the mutual inductance of solenoid S.

## Electromagnetic Induction and Alternating Current: Magnetic Flux

Many applications are found using electromagnetic induction, including electrical components such as inductors and transformers, and devices such as generators and electric motors. Two different phenomena are described by Faraday's law: the transformer EMF which is generated by an electric force due to a changing magnetic field due to the differential form of the Maxwell—Faraday equation and the motional EMF generated by a magnetic force on a moving wire see Lorentz force. In , James Clerk Maxwell drew attention to the separate physical phenomenon. This is a unique example in Physics where such a fundamental law is invoked to explain two such different phenomena. It was noticed by Albert Einstein that the two situations corresponded to a relative movement between a conductor and a magnet, and the outcome was unaffected by which one was moving.

Doorsteptutor material for AIIMS Physics is prepared by world's top subject experts: fully solved questions with step-by-step explanation - practice your way to success. It is the phenomenon of production of e. The e. SI unit of magnetic flux is weber. The magnitude of induced emf is proportional to the rate of change of magnetic flux.

There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick to learn flash cards, flow charts, mind maps, teacher notes, important formulas, past examinations question bank, important concepts taught by teachers. Students can download these useful educational material free and use them to get better marks in examinations. Also refer to other worksheets for the same chapter and other subjects too.

Electromagnetic induction is a phenomenon in which the rate of change of flux through a coil causes an induced emf. Due to this induced emf, an induced current is created inside the coil. The topics and sub-topics covered in Electromagnetic Induction Class 12 Notesare:.

И в следующую секунду все присутствующие поняли, что это было ошибкой. ГЛАВА 119 - Червь набирает скорость! - крикнула Соши, склонившаяся у монитора в задней части комнаты.  - Неверный ключ. Все застыли в ужасе.

Слушай, парень, я американец из Мериленда. Если я и полицейский, то уж точно не здешний, как ты думаешь. Эти слова, похоже, озадачили панка. - Меня зовут Дэвид Беккер.

- Это сделаешь. ГЛАВА 48 - Что? - воскликнула Мидж, не веря своим ушам.  - Стратмор говорит, что у нас неверные данные. Бринкерхофф кивнул и положил трубку.

Вот где кольцо! - подумал.  - В сумке. - и улыбнулся, едва сохраняя спокойствие.

Стратмор сидел за современным письменным столом с двумя клавиатурами и монитором в расположенной сбоку нише. Стол был завален компьютерными распечатками и выглядел каким-то чужеродным в этом задернутом шторами помещении. - Тяжелая неделя? - спросила .

- Что происходит. С какой стати университетский профессор… Это не университетские дела. Я позвоню и все объясню. Мне в самом деле пора идти, они связи, обещаю. - Дэвид! - крикнула .

ГЛАВА 4 Потайная дверь издала сигнал, выведя Сьюзан из состояния печальной задумчивости. Дверь повернулась до положения полного открытия. Через пять секунд она вновь закроется, совершив вокруг своей оси поворот на триста шестьдесят градусов. Сьюзан собралась с мыслями и шагнула в дверной проем. Компьютер зафиксировал ее прибытие.

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ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS. • The phenomenon of production of induced emf in a conductor when electric flux linked.

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