Magnetic force - Study guides, Class notes & Summaries

Active Shielding ~~> The use of a coil of wire, with an electrical current running through it, to produce an electromagnetic field opposing the static magnetic field, to reduce the fringe field. Bsub0 ~~> The unit used to describe the static magnetic field. Deflection ~~> The amount of attraction an object has to the static magnetic field. Diamagnetism ~~> A weakly repulsive force when placed in a strong static magnetic field. Faradays Law of Induction 2 | P a g ...

CWEA E/I Level 3 Questions and Answers 100% CorrectCWEA E/I Level 3 Questions and Answers 100% Correct If the potential difference across the coil is low, the coil will: A-draw too much current B-become too hot C-Produce too much magnetic force D-not heat up - ANSWER-D-not heat up The NEC identifies environments that contain flammable vapors and gases as which class of hazardous location? A-Class I B-Class II C-Class III D-Class IV - ANSWER-A-Class I Which of the following reduce...

20 milliamperes is the same as ________. (Remember, 1 milliampere = 0.001 ampere.) - Answer 0.02 amperes The orbital shell that has a maximum electron capacity of 18 electrons is the ___________ shell. - Answer Third A semiconductor material - Answer Has four valence electrons. The major factor for determining whether a particular element is a conductor, a semiconductor, or an insulator is - Answer The number of electrons in the valence shell. Elements that are called conductors - Answer ...

MRSO FINAL EXAM WITH QUESTIONS AND ANSWERS. How do magnetic flux lines travel? A. North to South B. South to North C. East to West D. West to East - Answer A North to South Which of the following can be potential safety concerns to a patient in the static magnetic field? A. Electrically conductive materials B. Ferrous objects C. Magnetic objects D. All of the choices. - Answer D. All of the choices An object that retains its magnetic field when exiting the static magnetic field is ...

MRSO: Exam mark Questions with 100% Correct Answers 2024 Which of the following describe when a non-ferrous object is repulsed by static magnetic field? a. Fourier transformation b. Lenz's force c. Ohm's law d. Larmor equation - ANSWER b. Lenz's force What is the FDA SAR limit for the whole body in first level controlled operating mode? a. 8 W/kg for 15 mins b. 4 W/kg for 15 mins c. 3 W/kg for 10 mins d. 7 W/kg for 20 mins - A...

MRSO Real Exam Questions and Answers All Correct Which of the following describe when a non-ferrous object is repulsed by static magnetic field? a. Fourier transformation b. Lenz's force c. Ohm's law d. Larmor equation - Answer-b. Lenz's force What is the FDA SAR limit for the whole body in first level controlled operating mode? a. 8 W/kg for 15 mins b. 4 W/kg for 15 mins c. 3 W/kg for 10 mins d. 7 W/kg for 20 mins - Answer-b. 4 W/kg for 15 mins Gadolinium contains what ki...

 -1.5 magnitude Sirius appears 25x brighter than 2 magnitude Polaris.  “All neutron stars are pulsars, but not all pulsars are neutron stars” FALSE  “Spectroscopic Binary” is the term given to a pair of stars that we can determine are orbiting each other only by measuring their periodic Doppler shifts.  A 6.8 solar mass neutron star does NOT exist.  A loop of gas and charged particles following the magnetic field lines between sunspot’s poles is a Prominence/...

Test Bank for College Physics 12e 12th Edition by Raymond A. Serway, Chris Vuille, John Hughes. Full Chapters test bank are included with answers (Chapter 1 to 30) Complete Guide 1. Units, Trigonometry, and Vectors. Standards of Measurements. Measurement Uncertainty and Estimation. Math Review. Vectors. Overview of Physics. 2. Motion in One Dimension. Displacement, Velocity, and Acceleration. Motion Diagrams and Graphs. One-Dimensional Motion with Constant Acceleration. Freely Falling Obje...

RADIOFREQUENCY (RF) - ELECTROMAGNETIC RADIATION LOWER IN ENERGY THAN INFRARED. THE RF USED IN MRI IS IN THE FORM OF A BURST OF RF ENERGY (PULSE) I THE 10 MHZ TO 100MHZ RANGE RF PULS, DELIVERED TO THE PATIENT BY RF TRANSMITTER. THE RF FREQUENCY, AT THE LARMOR FREQUENCY, RESULTS IN ROTATION OF THE NET MAGNETIZATION VECTRO AND PHASE COHERENCE OF THE NUCLEAR SPINS. AN RF COIL IS USED FOR TRANSMITTING AND RECEIVING MRI SIGNALS (RF). FRINGE FIELDS - WEAKER MAGNETIC FIELDS THAT ARE AWAY FROM THE I...

MRSO FINAL EXAM WITH QUESTIONS AND ANSWERS. How do magnetic flux lines travel? A. North to South B. South to North C. East to West D. West to East - Answer A North to South Which of the following can be potential safety concerns to a patient in the static magnetic field? A. Electrically conductive materials B. Ferrous objects C. Magnetic objects D. All of the choices. - Answer D. All of the choices An object that retains its magnetic field when exiting the static magnetic field is ...