The law of electromagnetic induction
In accordance with your variant to solve one of the following problems listed below (The number of problem statement and all necessary input data are reduced in the table 2.4. ):
1 Coil of area of S has N loops of wire with resistance of R and is situated in the homogeneous magnetic field with induction of B. The loop’s plane makes the angle of b with magnetic induction lines. Within the changing of magnetic field direction on the opposite one, the charge of Q runs over the coil. With the values of magnitudes, set in the table 2.4, find the magnitude, which is set in the last column of the table.
2 On the iron core solenoid with inductance of L and area of cross-section of S is put on the wire ring. The winding of solenoid has loops of N. When the circuit is closed, through the solenoid the current I is been settled during the time interval Dt. The average EMF of eAVE is induced in the wire ring. The magnetic permeability of iron is m within these conditions. With the values of magnitudes, set in the table 2.4, find the magnitude, which is set in the last column of the table.
3 In the homogeneous magnetic field with induction of B rotating the short coil, which has N loops of diameter of D. The axis of rotation lies in the plane of loops of the coil and is perpendicular to the lines of magnetic field induction. Angular velocity of rotation is w (frequency of rotation of n, period of Т). The maximal value of EMF of induction, which appears in the coil is eMAX. With the values of magnitudes, set in the table 2.4, find the magnitude, which is set in the last column of the table.
TABLES OF TASK VARIANTS
Table 2.4
| Variant | Statement | N | S , cm2 | D, сm | L , сm | R , Ω | В , Т | β | Q , mC | I , A | μ | eAVE, V | Δt, ms | εМАX, V | ω , rad/s | ν , 1/s | Т , ms | Find |
| – | – | – | – | 0,4 | – | – | – | – | – | – | – | – | N | |||||
| – | – | 0,2 | 30о | - | – | – | – | – | – | – | – | – | Q | |||||
| – | – | – | – | – | – | – | – | – | – | – | – | В | ||||||
| – | – | – | – | – | – | 0,4 | – | – | – | – | μ | |||||||
| – | – | – | 0,2 | 60о | – | – | – | – | – | – | – | – | R | |||||
| – | – | – | 0,3 | – | – | – | – | – | – | – | – | – | ω | |||||
| – | – | 0,1 | – | – | – | – | – | – | – | – | – | β | ||||||
| – | – | – | – | – | 0,8 | – | – | – | – | – | εave | |||||||
| – | – | – | – | – | – | – | – | – | – | – | – | В | ||||||
| – | – | – | 40о | – | – | – | – | – | – | – | – | В | ||||||
| – | – | – | – | 0,2 | – | – | – | – | – | – | – | – | N | |||||
| – | – | 0,3 | 60о | – | – | – | – | – | – | – | – | – | Q | |||||
| – | – | – | – | – | – | – | – | – | – | – | – | В | ||||||
| – | – | – | – | – | 0,5 | – | 0,3 | – | – | – | – | μ | ||||||
| – | – | – | 0,3 | 30о | – | – | – | – | – | – | – | – | N | |||||
| – | – | – | 0,4 | – | – | – | – | – | – | – | – | – | Т | |||||
| – | – | 0,3 | – | – | – | – | – | – | – | – | – | β | ||||||
| – | – | – | 0,1 | – | – | – | – | – | – | – | – | – | εmaz | |||||
| – | – | – | – | – | 0,6 | – | – | – | – | – | εave | |||||||
| – | – | – | – | 0,1 | – | – | – | – | – | – | – | – | N | |||||
| – | – | – | 20о | – | – | – | – | – | – | – | – | В | ||||||
| – | – | – | 0,2 | – | – | – | – | – | – | – | – | – | ν | |||||
| – | – | – | – | – | – | 0,6 | – | – | – | – | I | |||||||
| – | – | – | 0,3 | – | – | – | – | – | – | – | – | – | εmaz | |||||
| – | – | – | – | – | – | 0,5 | – | – | – | – | N | |||||||
| - | – | – | – | – | – | 0,2 | 0,1 | – | – | – | – | S | ||||||
| – | – | – | – | 0,4 | – | – | – | – | – | – | – | – | D | |||||
| – | – | – | – | – | 0,7 | - | – | – | – | – | Dt | |||||||
| - | – | – | 0,15 | 70о | – | – | – | – | – | – | – | – | S | |||||
| – | - | – | – | – | – | 0,4 | 0,2 | – | – | – | – | L |
Bibliography
1. Трофимова Т. И. Курс физики. – М.: Высшая школа, 1990.
2. Зисман Г. А. и Тодес О. М. Курс общей физики – М. т. 2. § 14-17, 1974.
3. Детлаф А. А. Яворский Б. М. и др. Курс физики – М.; Высшая школа, т. 2, §9.1,.9.2, 9.4, 1977.
4. Калашников С. Г. Электричество. – М. Наука, §57, 58,59, 1977.
5. Викулин И. М. Электромагнетизм. Метод. указания для самостоятельной работы студентов по курсу физики. – Одесса: изд. УГАС, 2000.
| CONTENT | |
| Introduction .......................................................................................…………… | |
| Problem 1.1. The principle of superposition of electric fields...................……………….......... | |
| Problem 1.5. Direct current ….....................................……………………………......…............ | |
| Problem 2.1 The principle of magnetic fields’ superposition ...................................................... | |
| Problem 2.4 The law of electromagnetic induction ………………………...…...................... | |
| Bibliography …………........……......... ........…................................................. |
Educational methodical issue
Physics
Module 1.
Electromagnetics
Part 2: complex task
Writers: assoc. prof. GorbachevV.E., Tumbrukati E.G.