"Consider the four current-carrying wires described in the figure below. Each of these wires is long and straight, and carries the current I either into or out of the page, as shown." What is the direction of the net magnetic field produced by these four wires at the center of the square? Please see attached for diagram.
What is the speed of a 300-eV proton? What is the speed of a 300-eV electron? Key: 2.40x10^5, 1.03x10^7
In a region of space, the magnetic field increases at a constant rate. This changing magnetic field induces an electric field that (a) increases in time (b) is conservative (c) is in the direction of the magnetic field (d) has a constant magnitude. And why explain? Induced electric field E in Equation 31.9 (see attachment) is
Show how an undeflected trajectory for a moving charge is obtained with appropriate crossed E and B fields. Draw seperate diagrams to illustrate your answer for a positive charge and a negative charge.
A magnetic field has a magnitude of 12 T. What is the magnitude of an electric field that stores the same energy per unit volume as this magnetic field?
A 1140nF capacitor with circular parallel plates 1.12cm in diameter is accumulating charge at the rate of 20.7mC/s at some instant in time. What will be the induced magnetic field strength 10.8cm radially outward from the center of the plates? What will be the value of the field strength after the capacitor is fully charged?
Differentiate between the Earth's magnetic field and its production versus that of an ordinary bar magnet.
See attached file for the diagram. A proton source provides protons of various speeds. Protons of a particular speed follow the dotted line through the speed selector. The speed selector has an electric field of 3100 V/m and a magnetic field of 0.35T. The protons that the speed selector selects follow the dotted path.
Current and Force: Find the magnitude of the currents in A and deterimne if they are parallel or anti parallel
Two long, parallel wires are separated by a distance of 0.20 m and carry equal currents. There is a force of attraction per meter of 6.5 X 10-5 N/m between them. Find the magnitude of the currents in A and deterimne if they are parallel or anti parallel.
A copper sulfate solution is placed in a container that contains coaxial cylindrical copper electrodes, as indicated in the picture. An electric field is created by connecting a battery across the electrodes as shown. A magnet field is created by immersing a magnet in the center of the solution as shown. Uncharged pollen g