 Recent questions in Electromagnetism preprekomW 2020-12-03

### A rectangular coil of wire, 22cm by 35 cm and carrying a current of 1.4A, is oriented with the plane of its loop perpendicular to a uniform 1.5T magnetic field. a) calculate the net force and torque which the magnetic field exerts on the coil. b)the coil is rotated through a 30 degree angle about the y axis, the left side coming out of the plane. Calculate the net force and torque which the magnetic field now exerts on the coil babeeb0oL 2020-11-27

### Two spherical objects are separated by a distance of ­$1.80×{10}^{­-3}$ m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each object experiences an electrostatic force that has a magnitude of $4.55×{10}^{-21}$ N. How many electron did? It take to produce the chargeon one of the objects? babeeb0oL 2020-11-26

### A proton is released in a uniform electric field, and it experiences an electric force of  toward the south. What are the magnitude and direction of the electricfield? The equation is E=f/q, but there is only one number and three variables. What numbers go in the other two? Annette Arroyo 2020-10-20

### A conducting sphere of radius 0.01m has a charge of $1.0×{10}^{-9}C$ deposited on it. The magnitude of the electric field in N/C justoutside the surface of the sphere is: a. 0 b. 450 c. 900 d. 4500 e. 90000 jernplate8 2020-10-19 Annette Arroyo 2020-10-18