The magnetic field produced by an ordinary magnet is similar to the magnetic field produced when...
The magnetic field produced by an ordinary magnet is similar to the magnetic field produced when an electric current flows through a coil.
A) False
B) It depends on what kind of magnet you use
C) It depends on what kind of insulator is used
D) True
Homework Answers
True. the magnetic field produced by a permanent magnet and electro magnet is same, but electromagnet poses magnetic field only when current flowing through it,
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The magnetic field produced by an ordinary magnet is similar to
the magnetic field produced when...
What is the direction of the induced magnetic field in the coil when the bar magnet is moving...
A coil is suspended around an axis which is colinear with the axis of a bar magnet.The coil is connected to a resistor with ends labeled “a” and “b”. The bar magnet moves from left to right with North and South poles labeled as in the figure. UseLenz’s law to answer the following question concerning the direction of induced currents and magnetic fields.What is the direction of the induced magnetic field in the coil when the bar magnet ismoving from...
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....
Help pls answer all . The fact that an electric current generates a magnetic field has...
Help pls answer all .
The fact that an electric current generates a magnetic field has allowed people to 20. cons ruct which of the following devices? (Choose as many as apply.) (A) ammeters (B) voltmeters (C) motors (D) none of these When a magnet is plunged into a coil of wire, the magnitude of the current induced is affected by which of the following? (Choose as many as apply.) (A) the speed with which the magnet is plunged into...
Magnetic Field. I have no idea how to solve these questions, please help!!!! MAGNETIC FIELDS SUMMARY...
Magnetic Field. I have no idea how to solve these questions,
please help!!!!
MAGNETIC FIELDS SUMMARY You will measure how the magnetic field, B, produced by a coil varies with the current, I, in the coil. From your measurements, you w calculate the permeability constant Ho. Lastly you w use a magnet to induce a voltage in the coil. THEORY The magnetic field Batthe center of a circular coil (solenoid) of radius R with N turns that carries a current...
When a coil is ninety degrees to the magnetic field, the magnetic field passing through the...
When a coil is ninety degrees to the magnetic field, the magnetic field passing through the coil will be a)maximum b)Zero c)minimum d)can't be determined What is the force magnitude when a 0.60 A current travels through an "L" shaped conductor within 0.4 Tesla field? One arm of the "L" is 0.5 meters and the other is 0.7 meters a)0.21N b)0.61N c)0.14 N d)0.29 N
1) Induced emf in a coil depends on a) Relative motion of magnet b) Relative motion...
1) Induced emf in a coil depends on a) Relative motion of magnet b) Relative motion of coil c) Both d) None 2) When is passed through coil is there magnet a a (changing/unchanging) magnetic flux through the coil that induces an electromotive force(emf) in the coil; the incoming flux is (equal /not equal)to the outgoing flux. 3) While a magnet is moved toward the end of a solenoid, a voltage difference is induced between the two ends of the...
Please help me understand this physics assignment.? 28. When the magnetic field infinity is parallel to...
Please help me understand this physics assignment.?
28. When the magnetic field infinity is parallel to the velocity the resultant magnetic force will be equal to a) True b) False 29. The magn etic field lines of a magnet are always closed from north pole to south pole a) True b) False If the charged particle is not moving there will be no magnetic force a) True 30. b) False 31. If the magnetic field EB is perpendicular to the...
A) A conducting rod moves through a magnetic field at a constant speed. Why does the...
A) A conducting rod moves through a magnetic field at a constant speed. Why does the induced potential not continue to increase indefinitely? B) How can an electric field be produced without any charged objects? C) A transformer is formed when two coils are placed close enough that the magnetic field of one causes magnetic flux through the second? A changing current in one coil thus induces a current in the second. Why do you suppose transformers are not used...
1. When charged particles move parallel to the direction of a magnetic field, then according to...
1. When charged particles move parallel to the direction of a magnetic field, then according to the magnetic force equation, the particles will travel in a a. straight line b. circular path c. helical path d. loop 2. A 3.0-m length of wire is stretched horizontally between two vertical posts. The wire carries a current of 54.9 A and experiences a magnetic force of 20.6 N. If the magnetic field has a strength of 0.25 T at the location of...
Help pls answer all .
The fact that an electric current generates a magnetic field has allowed people to 20. cons ruct which of the following devices? (Choose as many as apply.) (A) ammeters (B) voltmeters (C) motors (D) none of these When a magnet is plunged into a coil of wire, the magnitude of the current induced is affected by which of the following? (Choose as many as apply.) (A) the speed with which the magnet is plunged into...
Magnetic Field. I have no idea how to solve these questions,
please help!!!!
MAGNETIC FIELDS SUMMARY You will measure how the magnetic field, B, produced by a coil varies with the current, I, in the coil. From your measurements, you w calculate the permeability constant Ho. Lastly you w use a magnet to induce a voltage in the coil. THEORY The magnetic field Batthe center of a circular coil (solenoid) of radius R with N turns that carries a current...
1) Induced emf in a coil depends on a) Relative motion of magnet b) Relative motion of coil c) Both d) None 2) When is passed through coil is there magnet a a (changing/unchanging) magnetic flux through the coil that induces an electromotive force(emf) in the coil; the incoming flux is (equal /not equal)to the outgoing flux. 3) While a magnet is moved toward the end of a solenoid, a voltage difference is induced between the two ends of the...
Please help me understand this physics assignment.?
28. When the magnetic field infinity is parallel to the velocity the resultant magnetic force will be equal to a) True b) False 29. The magn etic field lines of a magnet are always closed from north pole to south pole a) True b) False If the charged particle is not moving there will be no magnetic force a) True 30. b) False 31. If the magnetic field EB is perpendicular to the...
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