Homework Answers
here,
1)
the direction of field is upwards
when the magnitude of magnetic field increases
the magnetic flux through the coil increases
using Lenz's law
the induced current is so that the direction of induced field will decrease the flux and oppose the change
so, the direction of induced current is CLOCKWISE
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I. As shown below, a coil is in a magnetic field that is directed upward. If...
Procedure: Take one of the coils and connect it to the galvanometer. Use the cylindrical magnet...
Procedure: Take one of the coils and connect it to the
galvanometer. Use the cylindrical magnet to generate a changing
magnetic field around the coil and note the reading of the
galvanometer as the field changes. Thrust the N pole of the magnet
into the coil and note the effect on the galvanometer. When the
needle has come to rest, withdraw the magnet as quickly as
possible. Note the effect on the direction of current flow. Reverse
the magnet and...
For this station, you have two coils of wire (each with different numbers of loops), a...
For this station, you have two coils of wire (each with different numbers of loops), a magnet, some connecting wires, and a galvanometer. A galvanometer is an ammeter that measures very small currents (micro-amperes) and indicates the direction of that current. Understanding how the meter behaves is important here, because you’re going to use the meter to determine/measure current—including its direction. For this galvanometer, when (conventional) current enters the terminal on the right (as viewed when reading the dial), the...
Moving a magnet in and out of a coil will make the needle on a galvanometer...
Moving a magnet in and out of a coil will make the needle on a galvanometer move to each side. a) explain what is happening in terms of magnetic induction. b) what would it take to induce an emf that stays positive, or that stays negative? is it possible? c) how can you get the largest possible deflection of the needle? explain what you do in terms of the magnetic field of the magnet, and the induced emf.
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) Which of Maxwell's equations below predicts an induced magnetic field due to changes in an...
1) Which of Maxwell's equations below predicts an induced magnetic field due to changes in an electric field? A) #Edi = 9 B) B. dA= 0 D$B.ds = Hole + Hope E) All of them 2) In the figure, two parallel wires carry currents of magnitude / as shown. The current is decreasing with time. A rectangular loon is midway between the wires. What is the direction of the net magnetic field in the region between the wires and that...
For the setup below, we can see that coil A will generate a magnetic field that...
For the setup below, we can see that coil A will generate a magnetic field that coil B will see. As long as the field is constant, no induced magnetic fields will be produced by coil B. However, if the field from A changes, then coil B will induce a voltage which induces a current which induces a magnetic field to oppose any change. So what will be the direction of the current if: The switch on A is opened...
When the switch is closed in the circuit shown in the sketch in Figure 22-7
When the switch is closed in the circuit shown in the sketch in Figure 22-7, the wire between the poles of the horseshoe magnet deflects upward. From this you can conclude that the left end of the magnet is A) a south magnetic pole C) not contributing to the wire's deflection. B) a north magnetic pole. D) a magnetic monopole
The figure shows a region of uniform magnetic field directed into the page, surrounded by regions...
The figure shows a region of uniform magnetic field directed
into the page, surrounded by regions where the magnetic field is
zero. A square coil of wire is moving to the right across the
figure in snapshots.
When the coil is moving out of the
region of non-zero magnetic field.
a) On the figure, draw the direction of the induced current in
the wire loop. If there is no induced current, explicitly state
that.
b) Draw the direction of the...
will rate, thanks! Syudre coil is in a uniform magnetic field that is perpendicular to the...
will rate, thanks!
Syudre coil is in a uniform magnetic field that is perpendicular to the plane of the coil and directed into the screen, as shown. If this magnetic field begins to increase in magnitude what will the induced current in the coil be? X X X X X directed out of the screen zero clockwise counter-clockwise directed into the screen
Procedure: Take one of the coils and connect it to the
galvanometer. Use the cylindrical magnet to generate a changing
magnetic field around the coil and note the reading of the
galvanometer as the field changes. Thrust the N pole of the magnet
into the coil and note the effect on the galvanometer. When the
needle has come to rest, withdraw the magnet as quickly as
possible. Note the effect on the direction of current flow. Reverse
the magnet and...
1) Which of Maxwell's equations below predicts an induced magnetic field due to changes in an electric field? A) #Edi = 9 B) B. dA= 0 D$B.ds = Hole + Hope E) All of them 2) In the figure, two parallel wires carry currents of magnitude / as shown. The current is decreasing with time. A rectangular loon is midway between the wires. What is the direction of the net magnetic field in the region between the wires and that...
For the setup below, we can see that coil A will generate a magnetic field that coil B will see. As long as the field is constant, no induced magnetic fields will be produced by coil B. However, if the field from A changes, then coil B will induce a voltage which induces a current which induces a magnetic field to oppose any change. So what will be the direction of the current if: The switch on A is opened...
The figure shows a region of uniform magnetic field directed
into the page, surrounded by regions where the magnetic field is
zero. A square coil of wire is moving to the right across the
figure in snapshots.
When the coil is moving out of the
region of non-zero magnetic field.
a) On the figure, draw the direction of the induced current in
the wire loop. If there is no induced current, explicitly state
that.
b) Draw the direction of the...
will rate, thanks!
Syudre coil is in a uniform magnetic field that is perpendicular to the plane of the coil and directed into the screen, as shown. If this magnetic field begins to increase in magnitude what will the induced current in the coil be? X X X X X directed out of the screen zero clockwise counter-clockwise directed into the screen
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