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Electric & Magnetic Fields

Deflection of electrons passing through magnetic field

In a television set, electrons are accelerated from rest through a potential difference of 19 kV. The electrons then pass through a 0.28 Tesla magnetic field that deflects them to the appropriate spot on the screen. What is the magnitude of the maximum magnetic force that an electron can experience?

Magnetic force between two current carrying conductors.

Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. The length of each rod is 0.85 m, while the mass of each is 0.073 kg. One rod is held in place above the ground, and the other floats beneath it at a distance of 8.2 x 10^-3 m. What is the current in the r

the angle between the wire and the magnetic field

A wire of length 0.655 m carries a current of 21.0 A. In the presence of a 0.470 T magnetic field, the wire experiences a force of 5.46 N. What is the angle (less than 90 degrees) between the wire and the magnetic field?

Source of Magnetic Field

A tightly wound solenoid 20 cm long has 400 turns and carries a current of 4A so that its axial field is in the z direction. Neglecting end effects, find B and Bsubapp at the center when (a) there is no core in the solenoid and (b) there is an iron core with a magnetization M=1.2 x 10 ^6A/m.

Source of Magnetic Fields

A very long coaxial cable consists of an inner wire and a concentric outer cylindrical conducting shell of radius R. At one end, the wire is connected to the shell. At the other end, the wire and shell are connected to opposite terminals of the battery, so there is s current down the wire and back up the shell. Assume that the c

Source of Magnetic Field.

A solenoid with length 30 cm, radius 1.2 cm, and 300 turns carries a current of 2.6 A. Find B on the axis of the solenoid (a) at the center, (b) inside the solenoid at a point 10 cm from one end, and (c) at one end,

Source of the Magnetic Field

A single-turn circular loop of radius 3 cm carries a current of 2.6 A. what is the magnitude of B on the axis of the loop at (a) the center of the loop, (b) 1 cm from the center, (c) 2 cm from the center, and (d) 35 cm from the center?

Determining the change in potential energy of a proton

A uniform electric field, with a magnitude of 600 N/C, is directed parallel to the positive x-axis. If the potential at x=3.0 m is 1000 V, what is the change in potential energy of a proton as it moves from x=3.0 m to x=1.0 m? (qp= 1.6 x 10^-19C)? Vb-Va= -E(Sf-So)

Distance covered by electron in electric field.

An electron with a speed of 2.0 x 10^6 m/s moves into a uniform electric field of 500 N/C that is parallel to the electron's motion. How far does the electron move before coming to rest? (me= 9.11 x 10^-31 kg, e= 1.6 x 10 -19 C). (Change in Kinetic Energy = change in Electrical Potential Energy)

Electric Field and Stored Energy of Parallel-Plate Capacitor

A parallel-plate capacitor with plate area of 2 m^2 and a separation of 1.0 mm is charged to 100 V. (a) What is the electric field between the plates? (b) what is the energy per unit volume in the space between the plates? (c) find the total energy by multiplying your answer from part (b) by the total volume between the

Electric field lines & equipotential lines

Draw a picture of the electric field lines generated by a collection of two positive charges, both of charge q = 1. Center one at (1,0) and the other rat (-1,0). What happens to the electric field at the origin? (the point 0,0) Draw a few equipotential lines. Remember, these are the curves that circle the charge distribut

Surface force on electrically charged balloon

A balloon made of light conducting material could be kept approximately spherical by connecting it to a high voltage supply. The balloon has radius 0.05 m, and the dielectric breakdown field to produce spark in air is E_b = 3?10^6 V/m a) What is the maximum permissible voltage? b) What gas pressure, in atmospheres, insi

Equipotential Surfaces Constant Values

The electric field has a constant value of 4.0 x 10^3 V/m and is directed downward. The field is the same everywhere. The potential at a point P within this region is 155 V. What is the potential at a point (a.) 6.0 x 10^-3 m directly above P, (b.)3.0 x 10^-3 m directly below P, and (c) 8.0 . 10 ^-3 m directly to the right of

Solve: Electric Potential Difference

Question: Two protons are moving directly towards one another. When they are very far apart, their initial speeds are 3.00 x 10^6 m/s. What is the distance of closest approach?

Diagrams of Electric Fields

Draw electric field lines for a quadrupole formed of charges +Q, -Q, +Q, -Q at the corners of a square. Charges on a diagonal have the same sign. (On a field line, dy/dx = Ey/Ex)

Determining velocity of a proton accelerated by an electric field.

A proton is accelerated from rest by an electric field. The electric field starting point's potential is zero but the ending point electrostatic potential is -5,000 volts. I need to determine how to find the velocity of the proton at the ending point of 9.78 x 10^5 meters/second.

Electric Field & Magnitudes

The lines show the equipotential contours in the plane of three point charges, Q1, Q2, and Q3. The values of the potentials are in kV as indicated for the +5, 0, and -5 kV contours. The positions of the charges are indicated by the dots. the work required to move a charge of -0.51×10-12C from i to b is 3.06×10-9 J a: Ca

Expression Point Charges

y l l a (+q) l l -------l--------x l -a (+2q) l l Two point charges are fixed on the y-axis at the locations shown in the figure above. A charge of +q is located at y = a and a charge of +2q is located at y = -a. Express your answers to a an

Impossible electrostatic field, charges and work

See attached file for full problem description. 8. (a) Three charges are situated at the corners of a square (side a) as shown in Figure 2.41: (a) how much work does it take to bring in another charge, +q, from far away and place it in the fourth corner? (b) How much work does it take to assemble the whole configuration of

Electric field above surfaces

Electric field above surfaces. See attached file for full problem description. 1. find the electric field a distance z above one end of a straight line segment of length L, which carries a uniform line charge lamda. check that you formula is constistent with what you would expect for the case z >>L. 2. Find the electric fie

Equipotential curves surfaces

Hello, The problem states: V(x,y,z) = A(x^2 - 3y^2 + z^2) E(vector) = -2Ax, 6Ay, -2Az A = 640 the E field at a point (0,0, 0.250) = (0,0,-320) It says: In every plane parallel to the x-z plane, the equpotential contours are circles. What is the radius of the equipotential contour corresponding to V = 1280 V

Electric Field, Radioactivity & X-Ray Wavelength

1. The drawing shows the potential at five points on a set of axes. Each of the four points is 7.0 x 10^-3 mt from the point of origin. From the data shown find the magnitude and the direction of electric field in the vicinity of origin. (See attached for diagram) 2. A 0.5 kg tumor is being irradiated by a radioactive sou

Electron moving in the field of parallel plate capacitor

An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is phi= 1.8 x 10 ^-7 C/m^2, and the plates are separated by a distance of 1.5 x 10^-2 m. How fast is the electron moving just before it reaches the positive plate?

Electric Forces and Fields

An electrically neutral model airplane is flying in a horizontal circle on a 3.0-m guideline, which is nearly parallel to the ground. The line breaks when the kinetic energy of the plane is 50.0J. Reconsider the same situation, except that now there is a point charge of +q on the plane and a point charge -q at the other end of t

Quadruple Magnetic Fields

(See attached file for full problem description) (a) The arrangement of magnets attached is called a quadrupole. Sketch the magnetic field lines around the two magnets. At what point would the magnetic forces cancel out? (b) Sketch also the field lines in this arrangement and mark where the forces cancel out.