Homework Answers
A. 
b. Since , the flux in
decreasing into the page . So, according to Lenz low the induced
current would be such that the magnetic field due to this current
minimises this change. So, using Right hand thumb rule, the
direction of current is CLOCKWISE.
c. As we see from the graph of part a , the rate of change of flux increase with time and therefore the current will INCREASE with time.
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2) A straight wire is partially bent into the shape of a circle as shown below....
2) A straight wire is partially bent into the shape of a circle as shown below....
2) A straight wire is partially bent into the shape of a circle as shown below. A uniform magnetic field is directed perpendicular to the plane of the circle and into the page. Each end of the wire is then pulled at a constant speed so that the area of the circle shrinks to zero. (a) Sketch a graph of the magnetic flux with respect to time. flux time (b)Is the direction of the induced current in the circular wire...
Copyright © 2007 Pearson Prentice Hall,Inc. For the picture shown, which of the following statements is...
Copyright © 2007 Pearson Prentice Hall,Inc. For the picture shown, which of the following statements is true? (The magnetic field is uniform and constant.) O The flux is decreasing; the induced current is clockwise O The flux is increasing; the induced current is clockwise O The flux is decreasing; the induced current is counterclockwise O The flux is increasing; the induced current is counterclockwise
Two solenoids are made of a total of 2000 turns of copper wire. Solenoid I is...
Two solenoids are made of a total of 2000 turns of copper wire. Solenoid I is 2 m long. While solenoid II is 1 m long. When equal currents are present in the two solenoid I to the magnetic field B_11 along the axis of solenoid II, B_y/B is. A. 4 B 2 C. 1 D. 1/2 E. 1/4 A square loop of wire lies in the plane of the page. A uniform constant magnetic field is directed into the...
A circular loop of wire of resistance 0.4 Ohm and radius 11 cm, sitting n the...
A circular loop of wire of resistance 0.4 Ohm and radius 11 cm, sitting n the plane of this paper, is in a uniform magnetic field, directed out of the paper. A counterclockwise induced current of 3.5 mA is measured in the loop. Is the magnetic field increasing or decreasing as time elapses? Explain how you know. At what rate is the magnetic field changing with time?
Arrow to the right on diagram A circular wire ring is situated above a long straight...
Arrow to the right on diagram
A circular wire ring is situated above a long straight wire, as shown in the figure. The straight wire has a current flowing to the right, and the current is increasing in time at a constant rate Which statement is true? There is no induced current in the wire ring. There is an induced current in the wire ring, directed in clockwise orientation. There is an induced current in the wire ring, directed in...
A long straight wire carrying a current of 2.03 A moves with a constant speed v...
A long straight wire carrying a current of 2.03 A moves with a constant speed v to the right. A 120 turn circular coil of diameter 1.50 cm, and resistance of 3.25 u 2, lies stationary in the same plane as the straight wire. At some initial time the wire is to the left of the coil at a distance d = 13.0 cm from its center. 5.00 s later, the wire has moved to the right of the coil...
A circular loop of wire of resistance - 0.500 and radius 8.10 cm is in a...
A circular loop of wire of resistance - 0.500 and radius 8.10 cm is in a uniform magnetic field directed out of the page as in the figure below. A clockwise current of 120 mA is induced in the loop. (a) is the magnetic field increasing or decreasing in time? decreasing (b) Find the rate at which the field is changing with time.
Parts A-E refer to the following figure of a circular loop of conducting wire
1) Parts A-E refer to the following figure of a circular loop of conducting wire. In the figure, Region I has a uniform magnetic field in the direction shown and Region II has no magnetic field. a) If the loop moves to the right and starts to move into Region II, what is the direction of the induced current in the wire? Circle the correct response. a) Clockwise. b) Counterclockwise. c) There is no induced current. b) If the loop moves straight down and remains...
A long straight wire carrying a current I1 is near a wire loop as shown.
A long straight wire carrying a current I1 is near a wire loop as shown. For each part, determine whether the magnetic flux Φ through the loop due to Ii is into the page, out of the page or zero, and whether the current 12 induced in the loop is clockwise, counterclockwise or zero. a) I1 is constant to the left and the loop is moving toward the wireΦ: into page/out of page/zero I2: clockwise/counterclockwise/zero b) I1 is increasing to the right Φ: into...
A circular loop of flexible iron wire has an initial circumference of 160 cm, but its...
A circular loop of flexible iron wire has an initial circumference of 160 cm, but its circumference is decreasing at a constant rate of 15.0 cm/s due to a tangential pull on the wire. The loop is in a constant uniform magnetic field of magnitude 0.500 T, which is oriented perpendicular to the plane of the loop. Assume that you are facing the loop and that the magnetic field points into the loop. Find the magnitude of the emf epsilon...
2) A straight wire is partially bent into the shape of a circle as shown below. A uniform magnetic field is directed perpendicular to the plane of the circle and into the page. Each end of the wire is then pulled at a constant speed so that the area of the circle shrinks to zero. (a) Sketch a graph of the magnetic flux with respect to time. flux time (b)Is the direction of the induced current in the circular wire...
Copyright © 2007 Pearson Prentice Hall,Inc. For the picture shown, which of the following statements is true? (The magnetic field is uniform and constant.) O The flux is decreasing; the induced current is clockwise O The flux is increasing; the induced current is clockwise O The flux is decreasing; the induced current is counterclockwise O The flux is increasing; the induced current is counterclockwise
Two solenoids are made of a total of 2000 turns of copper wire. Solenoid I is 2 m long. While solenoid II is 1 m long. When equal currents are present in the two solenoid I to the magnetic field B_11 along the axis of solenoid II, B_y/B is. A. 4 B 2 C. 1 D. 1/2 E. 1/4 A square loop of wire lies in the plane of the page. A uniform constant magnetic field is directed into the...
A circular loop of wire of resistance 0.4 Ohm and radius 11 cm, sitting n the plane of this paper, is in a uniform magnetic field, directed out of the paper. A counterclockwise induced current of 3.5 mA is measured in the loop. Is the magnetic field increasing or decreasing as time elapses? Explain how you know. At what rate is the magnetic field changing with time?
Arrow to the right on diagram
A circular wire ring is situated above a long straight wire, as shown in the figure. The straight wire has a current flowing to the right, and the current is increasing in time at a constant rate Which statement is true? There is no induced current in the wire ring. There is an induced current in the wire ring, directed in clockwise orientation. There is an induced current in the wire ring, directed in...
A long straight wire carrying a current of 2.03 A moves with a constant speed v to the right. A 120 turn circular coil of diameter 1.50 cm, and resistance of 3.25 u 2, lies stationary in the same plane as the straight wire. At some initial time the wire is to the left of the coil at a distance d = 13.0 cm from its center. 5.00 s later, the wire has moved to the right of the coil...
A circular loop of wire of resistance - 0.500 and radius 8.10 cm is in a uniform magnetic field directed out of the page as in the figure below. A clockwise current of 120 mA is induced in the loop. (a) is the magnetic field increasing or decreasing in time? decreasing (b) Find the rate at which the field is changing with time.
A circular loop of flexible iron wire has an initial circumference of 160 cm, but its circumference is decreasing at a constant rate of 15.0 cm/s due to a tangential pull on the wire. The loop is in a constant uniform magnetic field of magnitude 0.500 T, which is oriented perpendicular to the plane of the loop. Assume that you are facing the loop and that the magnetic field points into the loop. Find the magnitude of the emf epsilon...
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