1. What creates a magnetic field? More than one answer may be correct. A. a stationary object with electric charge B. a stationary conductor carrying electric current C. a difference in electric potential D. a charged capacitor disconnected from a battery and at rest ...
A magnet produces a vector field, the magnetic field, at all points in the space around it. It can be defined by measuring the force the field exerts on a moving charged particle, such as an electron. The force (F) is equal to the charge (q) times the speed of the particle times ...
What do you know about magnetic fields? Find out by answering questions on key topics like a definition of a magnetic field and a scientist who came up with a law about attraction and repulsion. Quiz & Worksheet Goals These points will be covered on the quiz: Reason Earth is surrounded...
The earth has a magnetic field. What does the magnetic field do? A. Makes the earth spin B. Attracts iron and steel C. Makes the sun shine D. Helps plants grow 相关知识点: 试题来源: 解析 B。本题考查对地球磁场作用的了解,地球磁场能吸引铁和钢。A 选项地球自转不是磁场的作用;C 选项...
Magnetic Field: A magnetic field is produced by a changing electric field or a magnetic source like a magnet. It is denoted by {eq}\stackrel{\rightharpoonup}{B} {/eq} and has the units of Tesla. Answer and Explanation:1 A stray magnetic field is an unneeded magnetic field that forms...
Salzwedel, Mark. What Makes A Metal Magnetic? last modified March 24, 2022. https://www.sciencing.com/about-5113181-metal-magnetic/ Gallwis/Shutterstock In the 1982 film, "The Thing," a touchstone of the sci-fi horror genre, a group of researchers on a remote Antarctic base is terrorized...
Understand what a magnetic field is. Learn the definition of magnetic field lines and understand how one can detect magnetic field lines using a compass. Related to this Question What is magnetic field strength? What is a static magnetic field?
MAGNETIC fieldsELECTRON densityPLASMA gasesHETEROSTRUCTURESThe behavior of magnetoplasmon modes in high-quality two-dimensional electron systems based on AlGaAs/GaAs heterostructures with a disk mesa is studied by the optical detection method for resonant microwave absorption. A magnetic field at which a ...
A. A magnetic field B. An electric field C. An electromotive force D. A gravitational force 相关知识点: 试题来源: 解析 C。解析:根据文章内容,当导体在磁场中运动或导体周围的磁场发生变化时,会产生电动势。反馈 收藏
What effect does a magnetic field have on a beam of radiation containing a mixture of alpha particles，beta particles，and gamma rays？这题的意思是：磁场对含有α粒子，β粒子，还有γ射线混合物的辐射光束有什么影响？Alpha particles are attracted to the negatively charged pole .Beta ...