Magnetic Field

A particle of charge 6e enters a region containing a magnetic field with a velocity of 7.5 X 105 m/s that is perpendicular to the field. There is a force on the particle of 6.84 X 10-13 N. Find the magnetic field T.

Magnetic field

A 6.30cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.740T pointing up. During the course of 0.130s, the field is changed to one of 0.310 T pointing down. What is the average induced emf in the coil?

Magnetism

The magnetic field perpendicular to a circular loop of wire 17.6cm in diameter is changed from +0.510 T to -0.450 T in 117rms, where + means the field points away from an observer and - toward the observer. Calculate the induced emf.

Magnetism

A 17.2 cm diameter circular loop of wire is in a 1.13 T magnetic field. It is removed from the field in 0.110s. What is the average induced emf?

magnetic field

A long horizontal wire carries a current of It = 49.4 A. A seond wire (I), made of 2.30mm diameter copper wire and parallel to the first but L=17.6cm below it, is held in suspension magnetically. what is the current in the lower wire? use right as positive direction.

Physics - Electric Field

Electric Field Four identical point charges (q = + 10.0 micro coulomb) are located on the corners of a rectangle. The dimensions of the rectangle are L = 60.0 cm and W = 15.0 cm. Calculate the magnitude and direction of the resultant electric force exerted on the charge at the lower left corner by the other three charges.

Physics - Electric Flux

A charge of 170 micro coulomb is at the center of a cube of edge 80.0 cm. a)Find the total flux through each face of the cube. b)Find the flux through the whole surface of the cube. c)What if ? Would your answers to part a or b change if the charge were not at the center? Explain.

Potential Difference

A uniform electric field of magnitude 250 V/m is directed in the positive x direction. A +12.0 micro coloumb charge moves from the origin to the point (x, y) = (20.0 cm, 50.0 cm). a) What is the change in the potential energy of the charge-field system? b) Through what potential difference does the charge move?

The answer is given in Coulombs

Two positive chrages, when combined, give a total charge of +8.7 micro Couloumbs. When the charges are seperated by 3.00 meters, the force exerted by one charge on the other has a magnitude of 8.30E-3 Newtons. Find the amount of each charge.

Answer is in Newton-meters

A long thin rod (length = 3.5 maters) lies along the x axis, with its midpoint at the origin. In a vacuum, a +7.0 micro Coulombs point charge is fixed to one end of the rod, while a -7.0 micro Coloumb point charge is fixed to the other end. Everywhere in the x, y plane there is a constant external electric field( magnitude = 4.0 ...continues