Electrons Are Circulating in a 0

question 71

Multiple Choice

Electrons are circulating in a 0.58 m diameter cyclotron orbit in a uniform magnetic field of 1.1 T.One can think of these circulating electrons as a circular current loop with the same diameter.The magnetic field is then rapidly increased at a constant rate.If the magnitude of the induced electric field causing the electrons to increase their speed 25 ms after the magnetic field begins increasing is 0.73 V/m,what is rate at which the field is increasing? This is the basis for accelerating electrons in a betatron.

• A)2.5 T/s
• B)5.0 T/s
• C)1.3 T/s
• D)4.1 T/s
• E)3.3 T/s

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Definitions:

Active Transport

The movement of molecules across a cell membrane from a region of lower concentration to one of higher concentration, requiring energy.

Muscle Hypertrophy

The increase in muscle size and mass due to exercise, particularly strength training.

Fibrosis

A pathological process characterized by the accumulation of excess fibrous connective tissue in an organ or tissue.

Refractory Period

The period immediately following the transmission of an impulse in nerve or muscle cells during which a second impulse cannot be generated.