Magnetic fields - Study guides, Class notes & Summaries

Mike Holt Final Exam Study Guide Complete Questions And Answers 2023 When electrons are forced to move thru a conductor the magnetic fields of individual electrons subtract from one another T or f correct answer: false The direction of the electromagnetic field around a conductor because of current flow is determined by the right hand rule as it relates to the electron theory T or f correct answer: false The field intensity around the conductor carrying current increased current flo...

How DC motors operate? - CORRECT ANSWER Magnetic lines of force are continuous and always form closed loops; Magnetic lines of force do not cross. Armature: (Definition) - CORRECT ANSWER The rotating windings of a DC motor. The ____ is a movable electromagnet located between the poles of another fixed permanent (field) magnet as shown. - CORRECT ANSWER Armature A twisting force called ______ must be developed. _____ is produced by mounting a loop in a fixed magnetic field and as long ...

Different tissues that have signals that appear similar on an MR image are described as: A) hypointense B) hyperintense C) isointense D) isodense - Answer isointense in a large main magnetic field such as those employed in MRI, the motion of a hydrogen proton has been described as wobbling like a spinning top. this motion is called A) precession B) resonance C) frequency D) angular momentum - Answer precession magnetic resonance imaging is derived from the process known as: A) ma...

The use of x-rays to create a medical image on patients is referred to as: radiography 3 MULTIPLE CHOICE OPTIONS Particular care must be taken when using radiation for medical imaging. This is the result of radiation's ability to create __________ in human tissue and possible biochemical changes. ionizations 3 MULTIPLE CHOICE OPTIONS In the diagnosis of patient disease states, physicians can select from an array of medical diagnostic modalities. A few of these involve the use of ioniz...

Lab work with equations and results.

MULTIPLE CHOICE 1. The nurse is caring for a patient with suspected right-sided heart failure. Which manifestation best supports this potential diagnosis? a. Wheezing b. Orthopnea c. Edema d. Pallor ANS: C Right-sided heart failure leads to edema from systemic backup. Wheezing, orthopnea, and pallor are indicative of left-sided failure. PTS:1 DIF: Cognitive Level: Comprehension REF: 426, Table 19-2 OBJ:1 (theory) TOP: Heart Failure: Right Side KEY: Nursing Process Step: Assessment...

If the grade of fuel used in an aircraft engine is lower than specified for the engine, it will most likely cause - Answer- detonation What type fuel can be substituted for an aircraft if the recommended octane is not available? - Answer- The next higher octane aviation gas Which instrument will become inoperative if the pitot tube becomes clogged? - Answer- Airspeed What is density altitude? - Answer- The pressure altitude corrected for nonstandard temperature What is the maximum fl...

A nurse is reinforcing discharge teaching with the family of a client who has a new diagnosis of a seizure disorder. The nurse should instruct the client's family to take which of the following actions first during the event of a seizure? A. Reorient the client. B. Protect the client's head. C. Loosen constrictive clothing. D. Turn the client on his side. B. Protect the client's head Rationale: The nurse should apply the safety and risk reduction priority-setting framework. This fra...

Edexcel A Level Physics Topic 7 Electric and Magnetic Fields June 2024 Exam Questions and Answers 100% Pass

An imaging modality that uses no ionizing radiation and the energy of radio waves and magnetic fields is? - MRI Particular care must be taken when using radiation for medical imaging. This is the result of radiation's ability to create __________ in human tissue and possible biochemical changes. - Ionizations The use of X-rays to create a medical image on patients is referred to as? - Radiography The radiography "practice standards" are developed and maintained by the? - ...