Homework Answers
The induced emf and current
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1. A square coil of wire with 100 turns is pulled from region 1, where the...
1. A rectangular coil of wire with sides W and H has N turns. To its right is a region of uniform...
1. A rectangular coil of wire with sides W and H has N turns. To its right is a region of uniform constant magnetic field of magnitude B. The width of this region, L, is greater than W. The direction of the field is out of the page Starting outside the region of magnetic field, the coil moves with constant speed v to- wards, into, and out of the region of field, as shown. A light bulb of resistance R...
A rectangular coil of N = 123 turns and resistance R = 31?, moves at a...
A rectangular coil of N = 123 turns and resistance R = 31?, moves at a constant speed V= 14 m/s from a region with no magnetic field into a region with a magnetic field B= 0.79 T, That points into the page. The dimensions of the coil are a = 0.27 m by b = 0.14 m. While the coil straddles the boundary between the two regions, A. What is the magnitude of the induced emf, epsilon ? What...
The rectangular coil in the figure below has 94 turns, is 25 cm wide and 30...
The rectangular coil in the figure below has 94 turns, is 25 cm
wide and 30 cm long, and is located in a magnetic field B = 0.14 T
directed out of the page as shown. Only half of the coil in the
region of the magnetic field. The resistance of the coil is 23 ?.
Find the magnitude and direction of the induced current if the coil
is moving with a velocity of 2.0 m/s to the right, up...
The rectangular coil in the figure below has 73 turns, is 25 cm wide and 30...
The rectangular coil in the figure below has 73 turns, is 25 cm wide and 30 cm long, and is located in a magnetic field B 0.14 T directed out of the page as shown. Only half of the coil in the region of the magnetic field. The resistance of the coil is 23 2. Find the magnitude and direction of the induced current if the coil is moving with a velocity of 1.9 m/s to the right, up the...
A square loop of wire with side length 10 cm is moving to the right with...
A square loop of wire with side length 10 cm is moving to the right with constant speed of 16 m/s. The loop has total resistance of 0.8 ohms. It begins in a region with no magnetic field, then enters a region of magnetic field (wider than 10 cm) with a strength of 0.5 T pointing into the page. Finally it leaves the field. 21) While entering the field what is the direction of the induced current as seen from above...
The figure shows a coil entering a region (inside the dashed rectangle) where the magnetic field...
The figure shows a coil entering a region (inside the dashed rectangle) where the magnetic field B is constant. Assume B is out of the page, The maximum emf induced in the 5.00 ohm coil as it enters the field is 0.435 V The coil is connected to a 7.50 ohm resistor a)Calculate the maximum current in the coil, (b) Does the magnetic flux increase or decrease as the coil enters the region? Explain your answer. (c) What is the...
A circular coil of wire with radius 2 cm and 60 turns is placed in a...
A circular coil of wire with radius 2 cm and 60 turns is placed in a uniform magnetic field of magnitude 0.8 T. The magnetic field is parallel to the area vector; i.e. perpendicular to the plane of the coil. a) What is the magnetic flux through the coil? b) The magnetic field is decreased to 0 T in 0.1 s. What is the magnitude of the emf induced in the coil during this time interval? c) If the coil...
A current-carrying wire moves toward a coil A long straight wire carrying current I is moving...
A current-carrying wire moves toward a coil A long straight wire carrying current I is moving with speed v toward a small circular coil of radius r containing N turns, which is attached to a voltmeter as shown. The long wire is in the plane of the coil. (Only a small portion of the wire is shown in the diagram.) Voltmeter N turns radius r The radius of the coil is 0.02 m, and the coil has 11 turns. At...
The rectangular coil in the figure below has 66 turns, is 25 cm wide and 30...
The rectangular coil in the figure below has 66 turns, is 25 cm wide and 30 cm long, and is located in a magnetic ficld 8-0.14 T directed out of the page as shown. Only half of the coil in the region of the magnetic field. The resistance of the coil is 232. Find the magnitude and direction of the induced current if the coil is moving with a velocity of 1.9 m/s to the right, up the pege, to...
1. (20 pts) A circular coil with a radius of 8.0 cm is dropped from a...
1. (20 pts) A circular coil with a radius of 8.0 cm is dropped from a location where the magnetic field is 0.2 T into a region where the magnetic field is 1.6 T. The coil takes 0.12 s to fall, has 60 turns and is perpendicular to the magnetic field. The field does not change direction. a. Find the average induced emf in the coil as a result of this action. b. If the induced current flows clockwise as...
1. A rectangular coil of wire with sides W and H has N turns. To its right is a region of uniform constant magnetic field of magnitude B. The width of this region, L, is greater than W. The direction of the field is out of the page Starting outside the region of magnetic field, the coil moves with constant speed v to- wards, into, and out of the region of field, as shown. A light bulb of resistance R...
A rectangular coil of N = 123 turns and resistance R = 31?, moves at a constant speed V= 14 m/s from a region with no magnetic field into a region with a magnetic field B= 0.79 T, That points into the page. The dimensions of the coil are a = 0.27 m by b = 0.14 m. While the coil straddles the boundary between the two regions, A. What is the magnitude of the induced emf, epsilon ? What...
The rectangular coil in the figure below has 94 turns, is 25 cm
wide and 30 cm long, and is located in a magnetic field B = 0.14 T
directed out of the page as shown. Only half of the coil in the
region of the magnetic field. The resistance of the coil is 23 ?.
Find the magnitude and direction of the induced current if the coil
is moving with a velocity of 2.0 m/s to the right, up...
The rectangular coil in the figure below has 73 turns, is 25 cm wide and 30 cm long, and is located in a magnetic field B 0.14 T directed out of the page as shown. Only half of the coil in the region of the magnetic field. The resistance of the coil is 23 2. Find the magnitude and direction of the induced current if the coil is moving with a velocity of 1.9 m/s to the right, up the...
The figure shows a coil entering a region (inside the dashed rectangle) where the magnetic field B is constant. Assume B is out of the page, The maximum emf induced in the 5.00 ohm coil as it enters the field is 0.435 V The coil is connected to a 7.50 ohm resistor a)Calculate the maximum current in the coil, (b) Does the magnetic flux increase or decrease as the coil enters the region? Explain your answer. (c) What is the...
A circular coil of wire with radius 2 cm and 60 turns is placed in a uniform magnetic field of magnitude 0.8 T. The magnetic field is parallel to the area vector; i.e. perpendicular to the plane of the coil. a) What is the magnetic flux through the coil? b) The magnetic field is decreased to 0 T in 0.1 s. What is the magnitude of the emf induced in the coil during this time interval? c) If the coil...
A current-carrying wire moves toward a coil A long straight wire carrying current I is moving with speed v toward a small circular coil of radius r containing N turns, which is attached to a voltmeter as shown. The long wire is in the plane of the coil. (Only a small portion of the wire is shown in the diagram.) Voltmeter N turns radius r The radius of the coil is 0.02 m, and the coil has 11 turns. At...
The rectangular coil in the figure below has 66 turns, is 25 cm wide and 30 cm long, and is located in a magnetic ficld 8-0.14 T directed out of the page as shown. Only half of the coil in the region of the magnetic field. The resistance of the coil is 232. Find the magnitude and direction of the induced current if the coil is moving with a velocity of 1.9 m/s to the right, up the pege, to...
1. (20 pts) A circular coil with a radius of 8.0 cm is dropped from a location where the magnetic field is 0.2 T into a region where the magnetic field is 1.6 T. The coil takes 0.12 s to fall, has 60 turns and is perpendicular to the magnetic field. The field does not change direction. a. Find the average induced emf in the coil as a result of this action. b. If the induced current flows clockwise as...
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