Homework Answers
a) yes, in counterclockwise direction as viewed from the right .
b)yes in the clockwise direction as viewed from the right .
c)if the magnet held stationary there will be no current in the metal ring .
Lenz's law states that the direction of an induced e.m.f. will be such that if it were to cause a current to flow in a conductor in an external circuit, then that current would generate a field that would oppose the change that created it.
First think about what would happen if the opposite of Lenz's Law were true. Then the direction of the induced e.m.f. would be such that its magnetic field at the end of the solenoid nearest the N pole of the magnet, would resemble that of a south pole, and so the bar magnet would experience an attractive force directed into the solenoid. This would cause the bar magnet to accelerate, increasing the rate of change of magnetic flux linkage in the coil and consequently increasing the induced e.m.f., the current and the attractive force.
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Consider the meaning and the bar magnet shown in the fore The right part of the...
A bar magnet is oriented above a copper ring, as shown in the figure. The magnet...
A bar magnet is oriented above a copper ring, as shown in the figure. The magnet is dropped and passes completely through the ring. As viewed from above, what is the direction of the current induced in the ring after the magnet has completely passed through the ring and is somewhat below it? There is no current in the ring. counterclockwise clockwise
A bar magnet is held vertically above a horizontal metal ring
A bar magnet is held vertically above a horizontal metal ring, with the south pole of the magnet at the top (Figure 22.63). If the magnet is lifted straight up, will current run clockwise or counterclockwise in the ring, as seen from above?
A bar magnet is moved (in the plane of the page) with respect to a single-tur...
A bar magnet is moved (in the plane of the page) with respect to a single-tur of radius 5.00 cm as shown (the coil lies in a plane perpendicular to the di of the bar magnet). Over a time interval of 0.150 s, the magnitude of the magnetic field at the coil varies from 0.640 T to 0.240 T. The resistance of coil is 2.50 Ohms. Assume that the magnetic field is uniform over the bounded by the coil. 4....
For each of the actions depicted below, a magnet and/or metal loop moves with velocity v?...
For each of the actions depicted below, a magnet and/or metal
loop moves with velocity v? (v? is constant and has the same
magnitude in all parts). Determine whether a current is induced in
the metal loop. If so, indicate the direction of the current in the
loop, either clockwise or counterclockwise when seen from the right
of the loop. The axis of the magnet is lined up with the center of
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Part A
For the action depicted...
A bar magnet is pushed toward a loop of wire as shown in the figure. (Figure...
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Pre-Lab Exercise N A bar magnet is moved relative to a coil as shown in the...
Pre-Lab Exercise N A bar magnet is moved relative to a coil as shown in the diagram. Which direction will the induced current flow if: 1. The magnet is moving into the coil 2. The magnet is moving out of the coil 3. The coil rotates clockwise until it makes a 45° angle with the magnet 3 חרחרוחב -
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Physics question. Suppose that a bar magnet falls through a conducting hoop of wire with its...
Physics question.
Suppose that a bar magnet falls through a conducting hoop of wire with its north pole facting downward. Three consecutive snapshots of its descent are shown below. For each snapshot, state whether: the magnetic flux through the loop is upward, downward, or zero; the induced current is clockwise, counterclockwise, or zero, from the point of view of an observer looking down from above the loop. Make a qualitative sketch of the induced current versus time (taking counterclockwise as...
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...
1. The stack of magnets works as one big bar magnet. Do the poles change when...
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A bar magnet is oriented above a copper ring, as shown in the figure. The magnet is dropped and passes completely through the ring. As viewed from above, what is the direction of the current induced in the ring after the magnet has completely passed through the ring and is somewhat below it? There is no current in the ring. counterclockwise clockwise
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A bar magnet is moved (in the plane of the page) with respect to a single-tur of radius 5.00 cm as shown (the coil lies in a plane perpendicular to the di of the bar magnet). Over a time interval of 0.150 s, the magnitude of the magnetic field at the coil varies from 0.640 T to 0.240 T. The resistance of coil is 2.50 Ohms. Assume that the magnetic field is uniform over the bounded by the coil. 4....
For each of the actions depicted below, a magnet and/or metal
loop moves with velocity v? (v? is constant and has the same
magnitude in all parts). Determine whether a current is induced in
the metal loop. If so, indicate the direction of the current in the
loop, either clockwise or counterclockwise when seen from the right
of the loop. The axis of the magnet is lined up with the center of
the loop.
Part A
For the action depicted...
A bar magnet is pushed toward a loop of wire as shown in the figure. (Figure 1) Is there a current in the loop? Yes, counterclockwise as seen from above Yes, clockwise as seen from above No
Pre-Lab Exercise N A bar magnet is moved relative to a coil as shown in the diagram. Which direction will the induced current flow if: 1. The magnet is moving into the coil 2. The magnet is moving out of the coil 3. The coil rotates clockwise until it makes a 45° angle with the magnet 3 חרחרוחב -
Physics question.
Suppose that a bar magnet falls through a conducting hoop of wire with its north pole facting downward. Three consecutive snapshots of its descent are shown below. For each snapshot, state whether: the magnetic flux through the loop is upward, downward, or zero; the induced current is clockwise, counterclockwise, or zero, from the point of view of an observer looking down from above the loop. Make a qualitative sketch of the induced current versus time (taking counterclockwise as...
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...
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