A coil is free to rotate in a magnetic field with a flux density of 33...
A coil is free to rotate in a magnetic field with a flux density of 33 mT. The coil has 50 loops and an area of 25 cm2. A current of 0.75 amps flows through the coil. When the plane of the coil makes a certain angle with the magnetic field, the torque on the coil is 2.8 × 10–3 N m. If the coil rotates until this angle is doubled, what is the percentage change in torque?
Homework Answers
Add Answer to:
A coil is free to rotate in a magnetic field with a flux density
of 33...
A simple DC motor consists of a single coil of 100 loops, rotating in a magnetic...
A simple DC motor consists of a single coil of 100 loops, rotating in a magnetic field with flux density B = 170 mT. The area of the coil is 3.50 × 10–4 m2. When the angle between the plane of the coil and the magnetic field increases from 15.0° to 45.0° the torque on the coil decreases by 5.39 × 10–3 N m. Calculate the current flowing through the coil.
An experiment to determine the local magnetic field of the Earth uses a coil consisting of...
An experiment to determine the local magnetic field of the Earth uses a coil consisting of 210 individual loops, each of area 12.7 cm2 . The coil is rotated and the resultant induced EMF is used to determine the magnetic field. The coil is rotated in a time interval of 4.90×10−2 s from a position where its plane is perpendicular to the earth's magnetic field to one where its plane is parallel to the field. The earth's magnetic field at the...
DQuestion 21 1 pts 53.13 2 Figure F3 Current-carrying square coil in magnetic field A square...
DQuestion 21 1 pts 53.13 2 Figure F3 Current-carrying square coil in magnetic field A square coil has N-40 turns of copper wire, each of side a-5.0 cm. The current in the coil is 1-4.0 A. The coil is placed in a uniform magnetic field B-16 T as shown in Figure F3. The plane of the coil makes an angle of 53.13 with the magnetic field. The coil is free to rotate about the y axis. Calculate the area of...
Find the flux of Earth's magnetic field of magnitude 5.00 ⨯ 10-5 T through a square...
Find the flux of Earth's magnetic field of magnitude 5.00 ⨯ 10-5 T through a square loop of area 10.0 cm2 for the following: (a) when the field is perpendicular to the plane of the loop ______ T · m2 (b) when the field makes a 40.0° angle with the normal to the plane of the loop _______T · m2 (c) when the field makes a 90.0° angle with the normal to the plane _______T · m2
Find the flux of Earth's magnetic field of magnitude 5.00 x 10-5 T through a square...
Find the flux of Earth's magnetic field of magnitude 5.00 x 10-5 T through a square loop of area 10.0 cm2 for the following: (a) when the field is perpendicular to the plane of the loop T m² (b) when the field makes a 46.0° angle with the normal to the plane of the loop IT m² (c) when the field makes a 90.0° angle with the normal to the plane T.m Need Help? Read it
26. A square coil of wire with 10 turns is in a magnetic field of 0.25...
26. A square coil of wire with 10 turns is in a magnetic field of 0.25 T. The total flux through the coil is 0.50 T-m'. Find the area of one turn if the field (a) is perpendicular to the plane of the coil and (b) makes an angle of 60° with the plane of the coil. 29 Find the frequencies of electromagnetic waves with wavelengths of (a) 3.0 cm. (b) 650 nm, and (c) 1.2 fm. (d) Classify the...
In a certain region, the magnetic field is represented by the equation B = (a +...
In a certain region, the magnetic field is represented by the equation B = (a + bt)ſ, where a = 3.50 mt and b = 4.30 mT/s. A circular coil of area 1.90 x 10-3 m2 and N = 5 turns is oriented in the x-z (horizontal) plane in this field region. Due to the change in magnetic flux, charge passes by a given point in the circuit at a rate of 6.45 mc/s. Determine the resistance of the coil....
7.34 In free space, the magnetic flux density is (a) Show that B is a magnetic field (b) Find the...
7.34 In free space, the magnetic flux density is (a) Show that B is a magnetic field (b) Find the magnetic flux through x-1,0 < 1,1 < z < 4. c) Calculate J (d) Determine the total magnetic flux through the surface of a cube defined by 0 x <2> 0 < y < 2, 0 < z < 2.
7.34 In free space, the magnetic flux density is (a) Show that B is a magnetic field (b) Find the...
What is the magnitude of the magnetic flux (Pinitial) through the coil before it is rotated?...
What is the magnitude of the magnetic flux (Pinitial) through the coil before it is rotated? Express your answer numerically, in webers, to at least three significant figures. Constants View Available Hint(s) In a physics laboratory experiment, a coil with 220 turns enclosing an area of 12.2 cm2 is rotated during the time interval 3.70x10-2s from a position in which its plane is perpendicular to Earth's magnetic field to one in which its plane is parallel to the field. The...
magnetic field of The flexible loop in the figure below has a radius of 10cm and...
magnetic field of The flexible loop in the figure below has a radius of 10cm and is in a it takes 0.25 s to close the loop, what is the magnitude of the average induced emf (in mV) in it during this time? strength 0.12 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If 1 20.1 Find the flux of Earth's magnetic field of magnitude 5.00 × 10-5 T through...
DQuestion 21 1 pts 53.13 2 Figure F3 Current-carrying square coil in magnetic field A square coil has N-40 turns of copper wire, each of side a-5.0 cm. The current in the coil is 1-4.0 A. The coil is placed in a uniform magnetic field B-16 T as shown in Figure F3. The plane of the coil makes an angle of 53.13 with the magnetic field. The coil is free to rotate about the y axis. Calculate the area of...
Find the flux of Earth's magnetic field of magnitude 5.00 x 10-5 T through a square loop of area 10.0 cm2 for the following: (a) when the field is perpendicular to the plane of the loop T m² (b) when the field makes a 46.0° angle with the normal to the plane of the loop IT m² (c) when the field makes a 90.0° angle with the normal to the plane T.m Need Help? Read it
26. A square coil of wire with 10 turns is in a magnetic field of 0.25 T. The total flux through the coil is 0.50 T-m'. Find the area of one turn if the field (a) is perpendicular to the plane of the coil and (b) makes an angle of 60° with the plane of the coil. 29 Find the frequencies of electromagnetic waves with wavelengths of (a) 3.0 cm. (b) 650 nm, and (c) 1.2 fm. (d) Classify the...
In a certain region, the magnetic field is represented by the equation B = (a + bt)ſ, where a = 3.50 mt and b = 4.30 mT/s. A circular coil of area 1.90 x 10-3 m2 and N = 5 turns is oriented in the x-z (horizontal) plane in this field region. Due to the change in magnetic flux, charge passes by a given point in the circuit at a rate of 6.45 mc/s. Determine the resistance of the coil....
7.34 In free space, the magnetic flux density is (a) Show that B is a magnetic field (b) Find the magnetic flux through x-1,0 < 1,1 < z < 4. c) Calculate J (d) Determine the total magnetic flux through the surface of a cube defined by 0 x <2> 0 < y < 2, 0 < z < 2.
7.34 In free space, the magnetic flux density is (a) Show that B is a magnetic field (b) Find the...
What is the magnitude of the magnetic flux (Pinitial) through the coil before it is rotated? Express your answer numerically, in webers, to at least three significant figures. Constants View Available Hint(s) In a physics laboratory experiment, a coil with 220 turns enclosing an area of 12.2 cm2 is rotated during the time interval 3.70x10-2s from a position in which its plane is perpendicular to Earth's magnetic field to one in which its plane is parallel to the field. The...
magnetic field of The flexible loop in the figure below has a radius of 10cm and is in a it takes 0.25 s to close the loop, what is the magnitude of the average induced emf (in mV) in it during this time? strength 0.12 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If 1 20.1 Find the flux of Earth's magnetic field of magnitude 5.00 × 10-5 T through...
Most questions answered within 3 hours.
-
I need to write a research paper and work cited about this
topic: The United States...
asked 16 minutes ago -
Hello! I was wondering if I could have some help?
If the vapor pressure of carvone...
asked 38 minutes ago -
An economist wants to estimate the mean per capita income (in
thousands of dollars) for a...
asked 57 minutes ago -
What would be the input/output characteristic of a circuit
obtained by putting two of your 2's-complementers...
asked 56 minutes ago -
In Drosophila, the transition from the syncytial blastoderm
stage to the cellular blastoderm stage is a...
asked 1 hour ago -
Project management question:
Name 3 different types of resources (hint: humans are one
type)
asked 1 hour ago -
Consider the following reaction: C 2H 2( g) + 2H 2( g) C 2H 6(
g)...
asked 1 hour ago -
Consider a 1.0 L buffer containing 0.092 mol L-1 HCOOH and 0.100
mol L-1 HCOO-. What...
asked 1 hour ago -
Koch Realty has owned a vacant land with a FMV of
$775,000 and an adjusted basis...
asked 1 hour ago -
It is estimated 29% of all adults in United States invest in
stocks and that 85%...
asked 1 hour ago -
What does a 2-sided p value of 0.04 mean? (I am not asking if it
is...
asked 2 hours ago -
A parallel-plate capacitor is made from two aluminum-foil
sheets, each 7.8 cmcm wide and 5.1 mmlong....
asked 2 hours ago