Question

In: Physics

The circle above is a wire loop of radius 0.85 m. It has a resistance of...

The circle above is a wire loop of radius 0.85 m. It has a resistance of 35 Ω.

1) If there is a constant magnetic field of 7.5 T into pointed into the page:

a) What is the magnitude of the induced EMF in the loop? What is its direction?

(clockwise or counterclockwise)

b) What is the magnitude of the current in the loop? What is its direction?

(clockwise or counterclockwise)

2)Assume that the magnetic field is initially 7.5 T pointed into the page, and then changes to 7.5 T pointed out of the page at a constant rate during a period of 3.5 sec

a) What is the magnitude of the induced EMF in the loop? What is its direction?

(clockwise or counterclockwise)

b) What is the magnitude of the current in the loop? What is its direction?

(clockwise or counterclockwise)

3) Now assume that the field going through the loop is B = 2.5 - .15t^2, where the field strength is in Tesla and the time t is in sec. The direction of the field is into the paper when B is positive and out of the paper when B is negative.

a What is the magnitude of the induced EMF in the loop when t=5.0 sec? What

is its direction? (clockwise or counterclockwise)

b) What is the magnitude of the current in the loop? What is its direction?

(clockwise or counterclockwise)

Solutions

Expert Solution

genius_generous answered 2 years ago
Next > < Previous

Related Solutions

A circular wire loop of radius r = 0.25 m and resistance R = 11.1 Ω...
A circular wire loop of radius r = 0.25 m and resistance R = 11.1 Ω rotates about a shaft through its diameter at a constant rate of f = 5.8 Hz in a uniform B = 0.49-T magnetic field directed perpendicular to the rotation axis. The plane of the loop is perpendicular to the magnetic field at time t = 0. a) Find the expression for the time-dependent magnetic flux through the loop. Φ = b) Find the value...
A wire loop has an area of 0.36 m2 and a resistance of 1.5 ?. The...
A wire loop has an area of 0.36 m2 and a resistance of 1.5 ?. The loop lies in a horizontal plane where there is a downward-directed magnetic field of magnitude 0.015 T. The wire is pulled to one side so that it is completely out of the field after 0.20 s. For the 0.20-s period during which the loop is being pulled out of the magnetic field, find the following: a. Find the average induced emf in the loop....
Consider a wire of uniform density and mass M shaped into a quarter circle of radius...
Consider a wire of uniform density and mass M shaped into a quarter circle of radius R.The wire is located in the xy plane, with the origin at the focus of the quarter circle (i.e at the center of the circle of which the wire is part). Choose the x axis parallel to the line that connects the endpoints of the wire, so that the y-z plane is a plane of reflection symmetry for the wire. This means that the...
A loop of wire has a radius of 2.0 cm and is in a constant magnetic...
A loop of wire has a radius of 2.0 cm and is in a constant magnetic field of 0.88 T directed into the plane of the paper. If the loop collapses so the radius of the circle shrinks to zero in a time of 0.35 s, a) find the magnitude of the average induced emf in the loop. b) If the loop is part of a larger circuit, in which direction does the induced current flow as the loop closes.
A copper wire has a radius of 1.0 mm. What is the resistance of 2m of...
A copper wire has a radius of 1.0 mm. What is the resistance of 2m of the wire at 0 degrees C? A. 6.3 microOhms B. 9.9 microOhms C. 6.3 nanoOhms D. 9.9 milliOhms
In the wire shown in segment BC is an arc of a circle with radius 30.0...
In the wire shown in segment BC is an arc of a circle with radius 30.0 cm, and point P is at the center of curvature of the arc. Segment DA is an arc of a circle with radius 20.0 cm, and point P is at its center of curvature. Segments CD and AB are straight lines of length 10.0 cm each. Part A Calculate the magnitude of the magnetic field at a point P due to a current 11.9 A in...
A square wire loop of side length a = 2.0 cm and resistance R = 10.0Ω...
A square wire loop of side length a = 2.0 cm and resistance R = 10.0Ω is inside a 1.00m long solenoid with 1000 windings such that the plane of the loop is perpendicular to the solenoid’s magnetic field. The solenoid initially carries a current I = 6.0 A, which is turned down to zero evenly over a period of 12.0 s. If the solenoid’s initial magnetic field is out of the page in the figure, what is the magnitude...
A single loop of wire of radius 3 cm carries a current of 2.7 A. What...
A single loop of wire of radius 3 cm carries a current of 2.7 A. What is the magnitude of B on the axis of the loop at the following positions? 1) the center of the loop T You currently have 0 submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question. 2) 1 cm from the center T You currently have 0 submissions for this question. Only 10 submission are allowed....
A circular loop of wire having a radius of 6.0 cm carries a current of 0.14...
A circular loop of wire having a radius of 6.0 cm carries a current of 0.14 A. A unit vector parallel to the dipole moment of the loop is given by 0.40i -0.92j. If the loop is located in a magnetic field given by B = (0.40 T)i + (0.35 T)k, A) find the magnitude of the magnetic dipole moment of the loop. B) Find the i component of the torque on the loop. C) Find the j component of...
A circular wire loop of radius 1.4 cm is placed in a magnetic field of magnitude...
A circular wire loop of radius 1.4 cm is placed in a magnetic field of magnitude 2.3 T. If the magnetic field goes to zero in a time of 5 s, what is the magnitude of the current induced in the loop? The wire has a diameter of 2 mm, and the resistivity of copper is 1.7 x 10-8 Ohm-m.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT