Homework Answers
![(ba Jength sa of wire, b (W) (20. RJ (10000) ( 211 (0.5)) Li 15.11 km ] we know that Paiss = I2R R: I = (1.59.15) ² tobo R =](http://img.homeworklib.com/questions/45e096b0-cf76-11ea-92e0-e13a411109fe.png?x-oss-process=image/resize,w_560)
Add Answer to:
16. To generate a uniform 2T magnetic field for an MRI machine with a coil of...
6. An solenoid in an MRI machine produces an axial magnetic field of 3.5 T. If...
6. An solenoid in an MRI machine produces an axial magnetic field of 3.5 T. If the length of the MRI is 1.4 m and it is wound with 800 turns of wire, what current is needed to produce this field?
A wire coil is often used to generate magnetic fields, and it is important to know...
A wire coil is often used to generate magnetic fields, and it is important to know how many complete turns (‘loops’) of wire are in the coil. Copper wire with circular cross-sectional area 0.70 mm2 is used to make a coil by being wound around a cylinder of diameter 40 cm. After winding the coil, it is measured to have a total resistance of 3.7Ω. How many turns of wire are on the spool? resistivity of copper: 1.72 x 10-8...
To see why an MRI utilizes iron to increase the magnetic field created by a coil,...
To see why an MRI utilizes iron to increase the magnetic field created by a coil, calculate the current needed in a 460–loop–per–meter circular coil 0.600 m in radius to create a 1.40–T field (typical of an MRI instrument) at its center with no iron present. The magnetic field of a proton is approximately like that of a circular current loop 6.800×10-16 m in radius carrying 1.02×104 A. What is the field at the center of such a loop?
To see why an MRI utilizes iron to increase the magnetic field created by a coil,...
To see why an MRI utilizes iron to increase the magnetic field created by a coil, calculate the current in amperes needed in a 420-loop-per-meter circular coil 0.660 m in radius to create a 1.30 T field (typical of an MRI instrument) at its center with no iron present. A The magnetic field of a proton is approximately like that of a circular current loop 0.650 ✕ 10−15 m in radius carrying 1.05 ✕ 104 A. What is the field...
A 24.0-cm diameter coil consists of 45 turns of circular copper wire 3.0 mm in diameter....
A 24.0-cm diameter coil consists of 45 turns of circular copper wire 3.0 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 7.85×10−3 T/s . The resistivity of copper is 1.68×10−8Ω⋅m. Determine the current in the loop. (Express your answer to two significant figures and include the appropriate units.) Determine the rate at which thermal energy is produced. (Express your answer to two significant figures and include the appropriate units.)
A 24.0-cm diameter coil consists of 45 turns of circular copper wire 3.0 mm in diameter....
A 24.0-cm diameter coil consists of 45 turns of circular copper wire 3.0 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 7.85×10−3 T/s .The resistivity of copper is 1.68×10−8Ω⋅m. a) Determine the current in the loop. (Express your answer to two significant figures and include the appropriate units.) b) Determine the rate at which thermal energy is produced.(Express your answer to two significant figures and include the appropriate units)
The maximum torque experienced by a coil in a 7.00 times 10^-3 T magnetic field is...
The maximum torque experienced by a coil in a 7.00 times 10^-3 T magnetic field is 0.60 N.m. The coil is circular and consists of seven turns. The current in the coil is 7.90 A. What is the length of the wire from which the coil is made? m
A generator almost always contains a coil of wire inside a magnetic field. The coil shown...
A generator almost always contains a coil of wire inside a magnetic field. The coil shown below has N turns and a radius of R. It is rotating in a magnetic field of strength B at an angular frequency o. This means that the angle between the area vector of the coil and the magnetic field is = wt. х a. What is the induced emf in the coil as a function of time? b. If the left side of...
A 5.0-m long, 1.0-mm diameter piece of copper wire (resistivity 1.7*10-8m)is woundinto a coil of many...
A 5.0-m long, 1.0-mm diameter piece of copper wire (resistivity 1.7*10-8m)is woundinto a coil of many turns that has a radius of 0.10 m. The ends of the wire are connected to a 1.5-V battery. Find:a) the magnetic field strength at the center of the coil.b) the magnitude and direction of the magnetic force on a proton placedat the center of the coil
A square coil of wire of side 3.80 cm is placed in a uniform magnetic field...
A square coil of wire of side 3.80 cm is placed in a uniform magnetic field of magnitude 2.00 T directed into the page as in the figure shown below. The coil has 30.5 turns and a resistance of 0.780 2. If the coil is rotated through an angle of 90.00 about the horizontal axis shown in 0.335 s, find the following. Rotation axis X X X (a) the magnitude of the average emf induced in the coil during this...
6. An solenoid in an MRI machine produces an axial magnetic field of 3.5 T. If the length of the MRI is 1.4 m and it is wound with 800 turns of wire, what current is needed to produce this field?
The maximum torque experienced by a coil in a 7.00 times 10^-3 T magnetic field is 0.60 N.m. The coil is circular and consists of seven turns. The current in the coil is 7.90 A. What is the length of the wire from which the coil is made? m
A generator almost always contains a coil of wire inside a magnetic field. The coil shown below has N turns and a radius of R. It is rotating in a magnetic field of strength B at an angular frequency o. This means that the angle between the area vector of the coil and the magnetic field is = wt. х a. What is the induced emf in the coil as a function of time? b. If the left side of...
A square coil of wire of side 3.80 cm is placed in a uniform magnetic field of magnitude 2.00 T directed into the page as in the figure shown below. The coil has 30.5 turns and a resistance of 0.780 2. If the coil is rotated through an angle of 90.00 about the horizontal axis shown in 0.335 s, find the following. Rotation axis X X X (a) the magnitude of the average emf induced in the coil during this...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago