1. Do I understand the definition of magnetic flux clear enough to be able to obtain...
1. Do I understand the definition of magnetic flux clear enough to be able to obtain it for a given system?
2. Do I understand the Faraday's and Lenz's law enough to be able to apply these laws and obtain followings? -- (1) induced emf, (2) induced current.
3. Do I understand how electric generators work? -- (1) AC electric power generator - (Vmax, frequency, angular frequency, period, current/emf direction, etc.), (2) DC electric power generator -- (magnitude, current/emf direction).
4. Do I know what Eddy current is and its applications?
5. Can I obtain the self-inductance and mutual-inductance?
Homework Answers
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1. Do I understand the definition of magnetic flux clear
enough to be able to obtain...
Learning Goal: To understand the terms in Faraday's law and to be able to identify the...
Learning Goal: To understand the terms in Faraday's law and to be able to identify the magnitude and direction of induced emf. Faraday's law states that induced emf is directly proportional to the time rate of change of magnetic flux. Mathematically, it can be written as E=???B?t, where E is the emf induced in a closed loop, and ??B?t is the rate of change of the magnetic flux through a surface bounded by the loop. For uniform magnetic fields the...
1 of 15 When a field is parallel to a plane of area, the magnetic flux...
1 of 15 When a field is parallel to a plane of area, the magnetic flux through the coil is A zero. B infinite. C 2. D 5. Question 2 of 15 A moving charge experiences magnetic forces because of a A magnetic flux. B magnetic field. C magnetic current. D both a and b. Question 3 of 15 Total number of magnetic field lines passing through an area is called A magnetic flux density. B magnetic flux. C emf....
3. Electromagnetic Inductance. Consider a single loop under magnetic field. (a) If the area A =...
3. Electromagnetic Inductance. Consider a single loop under magnetic field. (a) If the area A = 0.012[m) is constant, but the magnetic field is increasing at the rate of 0.020 T/s), determine the induced emf. (Use Faraday's law; the induced emf in a loop equals the absolute value of the time rate of change of the magnetic flux through the loop.) (b) If the total resistance of the circuit is 5.0(82), find the induced current. (c) Suppose we change the...
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 11)...
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 11) A changing magnetic field can produce an electric current. 12) An emf is induced in a wire by moving the wire near a magnet. 13) A constant magnetic field can be used to produce an electric current. 14) An electric generator is a device that converts electrical energy into mechanical energy. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers...
help me with this true false concepts PHYS2326-TEST II Name ID 2. The magnetic force on...
help me with this true false concepts
PHYS2326-TEST II Name ID 2. The magnetic force on a moving charge q is parallel to both its velocity and its magnetic field. 3. A magnetic field will always exerts a force on any charge (or current) present in the field. 4. Two charges of equal magnitude but opposite signs moving in the same direction in the same field will experience magnetic forces in same directions. 5. RC circuits differ from DC circuits...
Objective: In this lab you will investigate magnets, electromagnets, electric motors, generators, and magnetic inductance and...
Objective: In this lab you will investigate magnets, electromagnets, electric motors, generators, and magnetic inductance and discuss their applications. Part 1: Magnetic Fields How do the lodestone and round magnet affect the compass needle? How can you tell which side is North and South? How is an electromagnet similar to a permanent magnet? How is it different? Part 2: Electric Motors Describe how a DC electric motor works. Part 3: Magnetic Induction In the setup with a gilley coil connected...
A21921 Section B 4. (a) Sketch the lines of magnetic flux B inside and outside a long, curent- carrying solenoid, labelling a clearly the direction of B relative to the direction of current flow....
A21921 Section B 4. (a) Sketch the lines of magnetic flux B inside and outside a long, curent- carrying solenoid, labelling a clearly the direction of B relative to the direction of current flow. all of the important tures, and indicating Stating any approximations that you make, show that the axial magnetic [5 fux density, B, deep inside a long solenoid of length 1, total number of turns N, carrying a current 1, is approximately Two solenoids are arranged as...
please show work when possible so that I may better understand. Thank you. x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field ass...
please show work when possible so that I may better
understand. Thank you.
x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field assumed to be uniform and constant in the direction shown. A short conducting bar that is to be (or carry) the projectile is placed across the bars at x -0. The current flows through the bars as shown. The magnetic force on the bar causes it...
3. A controlled single-phase fiull-wave controlled rectifier is connected in a de motor drive in Figure...
3. A controlled single-phase fiull-wave controlled rectifier is connected in a de motor drive in Figure 4. The de motor armature inductance can be assumed large enough such that any motor curent ripple is negligible. (a) Assuming negligible supply reactance, show that the average rectifier output voltage V, in tems of the supply ms voltage E and the firing angle a, is given by 2/2E (6 marks) cos a _ (b) Given that the supply voltage is 230V, 50HZ and...
3. Electromagnetic Inductance. Consider a single loop under magnetic field. (a) If the area A = 0.012[m) is constant, but the magnetic field is increasing at the rate of 0.020 T/s), determine the induced emf. (Use Faraday's law; the induced emf in a loop equals the absolute value of the time rate of change of the magnetic flux through the loop.) (b) If the total resistance of the circuit is 5.0(82), find the induced current. (c) Suppose we change the...
help me with this true false concepts
PHYS2326-TEST II Name ID 2. The magnetic force on a moving charge q is parallel to both its velocity and its magnetic field. 3. A magnetic field will always exerts a force on any charge (or current) present in the field. 4. Two charges of equal magnitude but opposite signs moving in the same direction in the same field will experience magnetic forces in same directions. 5. RC circuits differ from DC circuits...
A21921 Section B 4. (a) Sketch the lines of magnetic flux B inside and outside a long, curent- carrying solenoid, labelling a clearly the direction of B relative to the direction of current flow. all of the important tures, and indicating Stating any approximations that you make, show that the axial magnetic [5 fux density, B, deep inside a long solenoid of length 1, total number of turns N, carrying a current 1, is approximately Two solenoids are arranged as...
please show work when possible so that I may better
understand. Thank you.
x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field assumed to be uniform and constant in the direction shown. A short conducting bar that is to be (or carry) the projectile is placed across the bars at x -0. The current flows through the bars as shown. The magnetic force on the bar causes it...
3. A controlled single-phase fiull-wave controlled rectifier is connected in a de motor drive in Figure 4. The de motor armature inductance can be assumed large enough such that any motor curent ripple is negligible. (a) Assuming negligible supply reactance, show that the average rectifier output voltage V, in tems of the supply ms voltage E and the firing angle a, is given by 2/2E (6 marks) cos a _ (b) Given that the supply voltage is 230V, 50HZ and...
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