AB B(t) a) b) variable R Figure. a) A magnet passing through a single col. b) A variable magnetic tield entering a single coll. Two situations are shown in the figures above: a) a magnet passes through the single coll with speed c'n, and b) a single col is placed in a magnetic field with intensity B(t); this varies with the time and is perpendicular to the col cross section (the magnetic tield extends through the coll, though this is not shown in the figurel. Part 1) Select the true statements from the following in regards to this situation: O In case a), it the magnet passes through the coil at constant speed v, the induced emt in the coll is zero. O In case a), it the magnet passes through the coil at constant speed v, the magnetic flux is always zero. O In the case b), the emt induced in the coll is zero. O In case b), if the area of the coll increases, the maximum magnetic flux increases. Part 2) Consider the situation b) with the coll having 17 turns and radus 7.9 mm. This coll is subjected to a varying magnetic field that changes uniformly from 0.50 Tto 7.60 Tin an interval of 35 s. Calculate the induced emt. Emf = V Part 3) Now the orientation of the coil is moditied. The coil's cross-section makes an angle 25* with the magnetic field Anes. What new radius would be needed to induce the same emf as in the previous part? (Consider the same time variation for the magnetic field). The number of turms and variation of the magnetic field remain the same. R = mm
AB B(t) a) b) variable R Figure. a) A magnet passing through a single col. b) A variable magnetic tield entering a single coll. Two situations are shown in the figures above: a) a magnet passes through the single coll with speed c'n, and b) a single col is placed in a magnetic field with intensity B(t); this varies with the time and is perpendicular to the col cross section (the magnetic tield extends through the coll, though this is not shown in the figurel. Part 1) Select the true statements from the following in regards to this situation: O In case a), it the magnet passes through the coil at constant speed v, the induced emt in the coll is zero. O In case a), it the magnet passes through the coil at constant speed v, the magnetic flux is always zero. O In the case b), the emt induced in the coll is zero. O In case b), if the area of the coll increases, the maximum magnetic flux increases. Part 2) Consider the situation b) with the coll having 17 turns and radus 7.9 mm. This coll is subjected to a varying magnetic field that changes uniformly from 0.50 Tto 7.60 Tin an interval of 35 s. Calculate the induced emt. Emf = V Part 3) Now the orientation of the coil is moditied. The coil's cross-section makes an angle 25* with the magnetic field Anes. What new radius would be needed to induce the same emf as in the previous part? (Consider the same time variation for the magnetic field). The number of turms and variation of the magnetic field remain the same. R = mm
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter22: Magnetic Forces And Magnetic Fields
Section22.3: Motion Of A Charged Particle In A Uniform Magnetic Field
Problem 22.2QQ: A charged particle is moving perpendicular to a magnetic field in a circle with a radius r. (i) An...
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Transcribed Image Text:AB
B(t)
a)
b) variable
R
Figure. a) A magnet passing through a single col. b) A variable magnetic tield entering a single coll.
Two situations are shown in the figures above: a) a magnet passes through the single coll with speed c'n, and b) a single col is placed in a magnetic field with intensity B(t); this varies with the time and is perpendicular to the col cross section (the magnetic tield extends
through the coll, though this is not shown in the figurel.
Part 1)
Select the true statements from the following in regards to this situation:
O In case a), it the magnet passes through the coil at constant speed v, the induced emt in the coll is zero.
O In case a), it the magnet passes through the coil at constant speed v, the magnetic flux is always zero.
O In the case b), the emt induced in the coll is zero.
O In case b), if the area of the coll increases, the maximum magnetic flux increases.
Part 2)
Consider the situation b) with the coll having 17 turns and radus 7.9 mm. This coll is subjected to a varying magnetic field that changes uniformly from 0.50 Tto 7.60 Tin an interval of 35 s.
Calculate the induced emt.
Emf =
V
Part 3)
Now the orientation of the coil is moditied. The coil's cross-section makes an angle 25* with the magnetic field Anes. What new radius would be needed to induce the same emf as in the previous part? (Consider the same time variation for the magnetic field). The number of
turms and variation of the magnetic field remain the same.
R =
mm
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