Question 1 Part 1 Of 1 10 Points A Magnetic Field Can Deflect A Beam Of Ele Trons But It Cannot Do Work On The Electron 1 (76.97 KiB) Viewed 21 times
Question 1 Part 1 Of 1 10 Points A Magnetic Field Can Deflect A Beam Of Ele Trons But It Cannot Do Work On The Electron 2 (63.5 KiB) Viewed 21 times
Question 1 Part 1 Of 1 10 Points A Magnetic Field Can Deflect A Beam Of Ele Trons But It Cannot Do Work On The Electron 3 (66.07 KiB) Viewed 21 times
Question 1 part 1 of 1 10 points A magnetic field can deflect a beam of ele trons, but it cannot do work on the electron to change their speed. Why? 1. Moving electrons change the magneti field such that it cannot do work on the elec trons. 2. A magnetic field can do work on the electrons. The work can either increase or decrease the speed of the electrons; however, with time-averaging their speeds remain con- stant. 3. The direction of a magnetic force is always perpendicular to the velocity of an electron. Thus, it cannot do work on the electron. 4. When a magnetic field does work on the electrons, the work is changed into light in- stead of increasing the energy of electrons.
S 5. y Question 3 part 1 of 1 10 points Consider a straight wire carrying current I, as shown. I 1. to the left • R What is the direction of the magnetic field at point R caused by the current I in the wire? 2. away from the wire 3. toward the wire 4. into the page 5. out of the page 6. to the right
n ng part 1 of 1 Question 6 10 points A constant current is flowing through a solenoid, creating a magnetic field. conducting, ring 2. downward B Hair The force which the magnetic field exerts on a conducting ring positioned as shown is: 1. There is neither a force nor a torque. 4. upward 3. There is no force, only a torque.
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