An electron in the beam of a TV picture tube is accelerated by a potential difference of 3 kV then it passes through a region of transverse magnetic field, where it moves in a circular arc with radius 15 cm. What is the velocity of the electrons ? (km/s)

An electron in the beam of a TV picture tube is accelerated by a potential difference of 3 kV then it passes through a region of transverse magnetic field, where it moves in a circular arc with radius 15 cm. What is the velocity of the electrons ? (km/s)

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Magnetic Forces And Magnetic Fields

Section: Chapter Questions

Problem 65P

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Concept explainers

Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.

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An electron in the beam of a TV picture tube is accelerated by a potential
difference of 3 kV then it passes through a region of transverse magnetic field,
where it moves in a circular arc with radius 15 cm. What is the velocity of the
electrons ? (km/s)

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