* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Magnetic Forces on Moving Charges
Magnetosphere of Saturn wikipedia , lookup
Geomagnetic storm wikipedia , lookup
Maxwell's equations wikipedia , lookup
Relativistic quantum mechanics wikipedia , lookup
Electromotive force wikipedia , lookup
Edward Sabine wikipedia , lookup
Superconducting magnet wikipedia , lookup
Magnetic stripe card wikipedia , lookup
Mathematical descriptions of the electromagnetic field wikipedia , lookup
Magnetic nanoparticles wikipedia , lookup
Giant magnetoresistance wikipedia , lookup
Magnetometer wikipedia , lookup
Magnetic monopole wikipedia , lookup
Neutron magnetic moment wikipedia , lookup
Electromagnetism wikipedia , lookup
Earth's magnetic field wikipedia , lookup
Magnetotactic bacteria wikipedia , lookup
Electromagnetic field wikipedia , lookup
Magnetotellurics wikipedia , lookup
Multiferroics wikipedia , lookup
Electromagnet wikipedia , lookup
Magnetoreception wikipedia , lookup
Force between magnets wikipedia , lookup
Lorentz force wikipedia , lookup
Magnetochemistry wikipedia , lookup
Name: _______________________________ Magnetism Day 5 Date: _________ Period: _______ Electromagnetism What determines the force on a moving charge in a magnetic field? Write the equation for the force on a charged particle traveling through a magnetic field. 1. A proton moves at a speed of 1.2 x 106 m/s perpendicular to a constant magnetic field of strength 0.004 T. What is the force on the proton? 2. In Figure P19.3, assume that vector v represents the velocity of a proton moving through a uniform magnetic field and vector F represents the magnetic force experienced by the proton. For each case, find the direction of the magnetic field that will produce the magnetic force shown. 3. A duck flying horizontally due north at 15 m/s passes over Atlanta, where the magnetic field of the Earth is 5 x 10-5 T in a direction 60‘ below a horizontal line running north and south. The duck has a positive charge of 4.0 x 10-8 C. a. What is the magnetic force acting on the duck? b. What is the direction of the force? 4. A proton moves at a speed of 2.0 x 107 m/s at right angles to a magnetic field with a magnitude of 0.10 T. Find the magnitude of the acceleration of the proton. 5. In the figure to the right, assume that the velocity vector v shows the initial direction of motion of a proton in a uniform magnetic field B. For each case (expect E and F), find the direction of the magnetic force acting on the proton. 6. Suppose an electron is chasing a proton up this page when suddenly a magnetic field pointing into the page is applied. What would happen to the particles? 7. Why does the picture on a television screen become distorted when a magnet is brought near the screen? 8. Can a stationary magnetic field set a resting electron in motion? Now that we know this, how do we harness this force to make a CRT (cathode ray tube) screen work to make a picture on your TV? Write the equation for centripetal force Now write the equation for the force on a charged particle for the special case in which Θ = 90‘, when it will move in a perfect circle. Now set the two equations equal to each other: Why do we want to calculate this? Let’s try it. 9. An electron moves at a speed of 6.2 x 106 m/s perpendicular to a constant magnetic field. The path is a circle of radius 2.2 x 10-3 m. a. Draw a sketch showing the magnetic field and the electron’s path. b. What is the magnitude of the field? c. What is the magnitude of the electron’s acceleration?