Homework Answers
The magnets has North pole as well as south pole , all magnetic field lines are emerged from North pole are must be entered in the south pole .
In this case two poles of each magnet are bounded in the same volume , hence total magnetic fied lines are emerged from the two north poles and goes outward to the specified volume is equal to the total number of field lines comes inside the specified volume and enters in the two south poles , hence the total magnetic flux is zero.
If you know about the Maxwell's equations of electromagnetism , one of them is
div.B = 0
Where B represent the magnetic field , and it's divergence is zero , i.e. magnetic field is solenoid (the number of magnetic field comes inside the region is equal to the number of field lines go outside that region) , this equation says that magnetic monopoles are not exist in our real world.
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b) Two bar magnets with their north poles having strength Qml=20 A.m and Qm2=10A.m are placed...
Two bar magnets are arranged so that they are parallel to each other as shown below....
Two bar magnets are arranged so that they are parallel to each
other as shown below. The dot at the location shown is the place
where a compass is paced.
a) If the north end compass needle is to point towards the left
(west), what must be the polarity of the poles at “x” and at “y?”
b) If the north end of the compass points up (north) at the
location of the dot, what must be the polarity of...
Two bar magnets are arranged so that they are parallel to each other. In case 1,...
Two bar magnets are arranged so that they are parallel to each
other. In case 1, north poles face each other on the right side. In
case2, south poles face each other on the right side. In what way
is the resulting field pattern the same, and in what way is it
different?
2-A bar magnet is placed on a flat surface so that the north
pole is on the left side and the south pole on the right. At...
Problem 23. A positive test charge qtest is placed at rest equidistance between the north and...
Problem 23. A positive test charge qtest is placed at
rest equidistance between the north and south poles of two
identical bar magnets (see figure). What is the net force on the
charge from the two magnetic poles? Suppose the magnetic strength
of one of the two bar magnets is doubled, what is the net force on
the charge from the two magnetic poles now?
The magnetic field of a current-carrying wire Problem
24. Consider a current-carrying wire running along...
A metal ring 4.90 cm in diameter is placed between the north and south poles of large magnets with the plane of its are...
A metal ring 4.90 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. These magnets produce an initial uniform field of 1.12 T between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.290 T/s Part A What is the magnitude of the electric field induced in the ring? Πνα ΑΣφ E3.3. 103 V/m Previous Answers Request...
3. Given the illustration below for a series of bar magnets and loops, for each diagram:...
3. Given the illustration below for a series of bar magnets and loops, for each diagram: A. Label the magnet poles B. Indicate the direction of the induced current I in the loop (none, clor cel) C. Indicate the direction of the induced magnetic field Bind (up or down) D. Identify if the magnetic flux is increasing or decreasing. Some details are given for guidance (20 pts total) Lenz's Law Magnet stationary . constant 4. A coil is connected in...
16. A bar of an iron -silicon alloy having the B-H behavior shown in the Figure...
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Question 5 C Draw the magnetic field lines corris000000 soccorrison Question 5D Two bar magnets are...
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1 pts Question 1 Select all of the following that are true about magnets and magnetic...
1 pts Question 1 Select all of the following that are true about magnets and magnetic fields. the source of magnetic fields is net motion of charged particles the South pole of a bar magnet can be separated from the North pole to make two monopoles like magnetic poles IS and S, or N and N) repel and opposites attract IN and S) □ magnetic field lines always form closed loops magnetic fields are scalars a straight wire with current...
16. A horseshoe magnet, made from two magnets and a steel yoke, is placed on a...
16. A horseshoe magnet, made from two magnets and a steel yoke, is placed on a top pan balance as shown in the upper diagram. A current is passed through a long wire which is fixed. The wire is between, and parallel to, the poles of the magnet, as shown in the lower diagram. 74.87 horseshoe magnet plan view wire balance platform The current is varied. The following values of balance reading m and current I are recorded. I JA...
Suppose now that the magnetic field is held constant at 20 mT and the copper bar...
Suppose now that the magnetic field is held constant at 20 mT and the copper bar is pushed to the left at a speed of [v] m/s. 20 cm What is the direction of the induced current inside the bar? there is no current up down A (conducting) metal bar of length L=20 cm is placed on metal rails as shown. The rails are connected by a wire with resistance R=2.00 ohm. The resistances of the bar and the rails...
Two bar magnets are arranged so that they are parallel to each
other as shown below. The dot at the location shown is the place
where a compass is paced.
a) If the north end compass needle is to point towards the left
(west), what must be the polarity of the poles at “x” and at “y?”
b) If the north end of the compass points up (north) at the
location of the dot, what must be the polarity of...
Two bar magnets are arranged so that they are parallel to each
other. In case 1, north poles face each other on the right side. In
case2, south poles face each other on the right side. In what way
is the resulting field pattern the same, and in what way is it
different?
2-A bar magnet is placed on a flat surface so that the north
pole is on the left side and the south pole on the right. At...
Problem 23. A positive test charge qtest is placed at
rest equidistance between the north and south poles of two
identical bar magnets (see figure). What is the net force on the
charge from the two magnetic poles? Suppose the magnetic strength
of one of the two bar magnets is doubled, what is the net force on
the charge from the two magnetic poles now?
The magnetic field of a current-carrying wire Problem
24. Consider a current-carrying wire running along...
A metal ring 4.90 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. These magnets produce an initial uniform field of 1.12 T between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.290 T/s Part A What is the magnitude of the electric field induced in the ring? Πνα ΑΣφ E3.3. 103 V/m Previous Answers Request...
3. Given the illustration below for a series of bar magnets and loops, for each diagram: A. Label the magnet poles B. Indicate the direction of the induced current I in the loop (none, clor cel) C. Indicate the direction of the induced magnetic field Bind (up or down) D. Identify if the magnetic flux is increasing or decreasing. Some details are given for guidance (20 pts total) Lenz's Law Magnet stationary . constant 4. A coil is connected in...
16. A bar of an iron -silicon alloy having the B-H behavior shown in the Figure is inserted within a coil of wire 0.40 m long and having 50 turns, through which passes a current of 0.1 A. (a) What is the B field within this bar? (b) At this magnetic field, (i) What is the permeability?i) What is the relative permeability? (i What is the susceptibility? (iv) What is the magnetization? Magnetic field strength, H (oersteds) 0.2 0.4 0.6...
Question 5 C Draw the magnetic field lines corris000000 soccorrison Question 5D Two bar magnets are placed close to eahc other with their Northpoles facing each other. a. Will the two magnets get attracted or repelled in this condition b. Draw magnetic field lines arounf them
1 pts Question 1 Select all of the following that are true about magnets and magnetic fields. the source of magnetic fields is net motion of charged particles the South pole of a bar magnet can be separated from the North pole to make two monopoles like magnetic poles IS and S, or N and N) repel and opposites attract IN and S) □ magnetic field lines always form closed loops magnetic fields are scalars a straight wire with current...
16. A horseshoe magnet, made from two magnets and a steel yoke, is placed on a top pan balance as shown in the upper diagram. A current is passed through a long wire which is fixed. The wire is between, and parallel to, the poles of the magnet, as shown in the lower diagram. 74.87 horseshoe magnet plan view wire balance platform The current is varied. The following values of balance reading m and current I are recorded. I JA...
Suppose now that the magnetic field is held constant at 20 mT and the copper bar is pushed to the left at a speed of [v] m/s. 20 cm What is the direction of the induced current inside the bar? there is no current up down A (conducting) metal bar of length L=20 cm is placed on metal rails as shown. The rails are connected by a wire with resistance R=2.00 ohm. The resistances of the bar and the rails...
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