- In The Figure Below The Current In The Long Straight Wire Is T 3 00 A And The Wire Lies In The Plane Of The Rectang 1 (11 KiB) Viewed 88 times
- In The Figure Below The Current In The Long Straight Wire Is T 3 00 A And The Wire Lies In The Plane Of The Rectang 2 (37.98 KiB) Viewed 88 times
- In The Figure Below The Current In The Long Straight Wire Is T 3 00 A And The Wire Lies In The Plane Of The Rectang 3 (9.78 KiB) Viewed 88 times
- In The Figure Below The Current In The Long Straight Wire Is T 3 00 A And The Wire Lies In The Plane Of The Rectang 4 (16.74 KiB) Viewed 88 times
- In The Figure Below The Current In The Long Straight Wire Is T 3 00 A And The Wire Lies In The Plane Of The Rectang 5 (10.7 KiB) Viewed 88 times
- In The Figure Below The Current In The Long Straight Wire Is T 3 00 A And The Wire Lies In The Plane Of The Rectang 6 (16.96 KiB) Viewed 88 times
- In The Figure Below The Current In The Long Straight Wire Is T 3 00 A And The Wire Lies In The Plane Of The Rectang 7 (17.8 KiB) Viewed 88 times
- In The Figure Below The Current In The Long Straight Wire Is T 3 00 A And The Wire Lies In The Plane Of The Rectang 8 (20.59 KiB) Viewed 88 times
- In The Figure Below The Current In The Long Straight Wire Is T 3 00 A And The Wire Lies In The Plane Of The Rectang 9 (17.26 KiB) Viewed 88 times
You have been hired by a "storm chaser" as an assistant. This individual loves to find locations at which tornadoes and violent lightning storms are occurring. While there, he takes photographs and makes electromagnetic measurements. You and he are observing a massive lightning storm in Oklahoma. The storm chaser has a new theory that nucleus-free atoms are formed for the very short time interval during a lightning strike. He asks you to evaluate his theory, which goes something like this: In a long, straight, vertical lightning stroke, electrons move downward and positive ions move upward and constitute a current of magnitude I. At a location in the air a distance R from the middle of the stroke a free electron drifts through the air toward the stroke with a speed y. While the current in the lightning stroke exists, a strong magnetic field exists at the position of the electron and causes it to move in a circular path like that in the figure below, with its plane perpendicular to the ground, The magnetic force F, acting on the charge is always directed toward the center of the circle B The storm chaser hypothesizes that the radius of the circular path is so small compared to that the field in which the electron moves is essentially uniform. The circulating electron would be like that of an electron in an atom in simplified theories of the atom, but without a nucleus! While he photographs the lightning, he asks you to determine the radius (inm) of the circular path of the electron to see if it is atomic-sized. He estimates the current in the lightning strika is 1 = 20.0KA, the electrons are located at a position R = 51.0 m from the stroke, and a typical electron speed in the air is v = 300 m/s.
A single-turn square loop of wire, 2.00 cm on each edge, carries a clockwise current of 0.160 A. The loop is inside a solenold, with the plane of the loop perpendicular to the magnetic field of the solenoid. The solenoid has 30.0 turns/cm and carries a clockwise current of 15.0 A. (a) Find the force on each side of the loop. magnitude direction Select (b) Find the magnitude of the torque acting on the loop. Nm
A solenoid of radius r= 1.25 cm and length = 31.0 cm has 275 turns and carries 12.0 A (3) Calculate the Hux through the surface of a disk-shaped area of radius R = 5.00 cm that is positioned perpendicular to and centered on the axis of the solenold as in the figure (a) above. wwb (b) Figure (b) above shows an enlarged and view of the same solenoid. Calculate the flux through the tan area, which is an annulus with an inner radius of a = 0.400 cm and outer radius of b = 0.800 cm. wwb
A cube of edge length = 4.80 cm is positioned as shown in the figure below. A uniform magnetic field given by B = {5.7 i +4.00 +3.0 ) T exists throughout the region. (a) Calculate the magnetic flux through the shaded face mWb (b) What is the total flux through the six faces? mwb
Two long, parallel conductors, separated by 14.0 cm, carry currents in the same direction. The first wire carries a current 1, = 4.00 A, and the second carries 1, = 8.00 A. (See figure below. Assume the conductors lie in the plane of the page.) ܕ 11 1 (2) What is the magnetic field created by I, at the location of 1,? magnitude direction --Select- (b) What is the force per unit length exerted by 1, on 1? magnitude Nm direction Select --- (c) What is the magnetic field created by I, at the focation of 1,? magnitude direction --Select- (d) What is the force per length exerted by I, on? magnitude N/m direction - Select
The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by a rubber layer an outer conductor, and another rubber layer. In a particular application, the current in the inner conductor ist, - 1.16 A out of the page and the current in the outer conductor is in = 3:10 A into the page. Assuming the distance d = 1.00 mm, answer the following. (a) Determine the magnitude and direction of the magnetic field at point a magnitude uT direction --Select (b) Determine the magnitude and direction of the magnetic field at point b. magnitude AT direction Select
Four long, parallel conductors carry equal currents of t = 7.40 A. The figure below is an end view of the conductors. The current direction is into the page at points A and B and out of the page at C and D. (a) Calculate the magnitude of the magnetic field at point. P. located at the center of the square of edge length = 0.200 m. (b) Determine the direction of the magnetic field at point P, located at the center of the square of edge length = 0.200 m. to the left O to the right O upward downward O into the page O out of the page (0) What If? What would be the magnitude and direction of the initial acceleration of an electron moving with velocity 2.88 x 10 m/s into the page at point ? magnitude direction Select
(a) A teaching assistant is preparing for an in-class demonstration, using insulated copper wire and a power supply. She winds a single layer of the wire on a tube with a diameter of solenoid = 10.0 cm. The resulting solenoid is 4 = 90.0 cm long, and the wire has a diameter of wire = 0.100 cm. Assume the insulation is very thin, and adjacent turns of the wire are in contact. What power (in W) must be delivered to the solenoid if it is to produce a field of 9.60 mt at its center? (The resistivity of copper is 1.70 x 10-60 m.) w What If? Assume the maximum current the copper wire can safely carry is 20.0 A. (b) What is the maximum magnetic field (in) in the solenoid? (Enter the magnitude.) (c) What is the maximum power in W) delivered to the solenoid? w