What is the speed of the electrons

Reference no: EM13245941

Electrons in a television's CRT are accelerated from rest by an electric field through a potential difference of 2.9 kV. In contrast to an oscilloscope, where the electron beam is deflected by an electric field, the beam is deflected by a magnetic field.

(a) What is the speed of the electrons?

m/s

(b) The beam is deflected by a perpendicular magnetic field of magnitude 1.03 T. What is the magnitude of the acceleration of the electrons while in the field?

m/s2

(c) What is the speed of the electrons after they travel 4.5 mm through the magnetic field?

m/s

(d) What strength electric field would give the electrons the same magnitude acceleration as in (b)?

V/m

(e) Why do we have to use an electric field in the first place to get the electrons up to speed? Why not use the large acceleration due to a magnetic field for that purpose?

Reference no: EM13245941

Questions Cloud

What is the linear velocity of the club head : During a golf drive, the angular velocity of the driver is 20 rad/s just before impact with the golf ball. If the distance from the club head to the axis of rotation is 2.0 m

Find the electric potential energy of three-particle system : A proton, an electron, and an alpha particle (of charge +2e) form an equilateral triangle of side length 2.19×10-10 m. What is the electric potential energy of the three-particle system

What is marginal utility of each of goods mary purchasing : Suppose Mary is in consumer equilibrium. The marginal utility of good A is 30, and the price of good A is $2. a)If the price of good B is $4, the price of good C is $3, the price of good D is $1, and the price of all other goods and services is $5

What assumptions must be made for the test to be valid : Can the company conclude that the mean kilo of product treated in one hour by this machine is more than 15,000? Use a 5% level of significance.

What is the speed of the electrons : Electrons in a television's CRT are accelerated from rest by an electric field through a potential difference of 2.9 kV, What is the speed of the electrons

Estimate for the mean amount per customer : Give a point estimate for the mean amount per customer spent at the supermarket and give a 99% confidence interval estimate for the mean amount per customer spent at the supermarket.

Explain why a currency depreciation leads to an improvement : For few months, prior to your vacation trip to France, you find that the exchange rate for your U.S. dollar has increased relative to the Euro. If you were a U.S. citizen or resident, are you pleased.

What is the linear speed at the top : A passenger in a roller coaster ride experienced weightless when s/he was at the top of the loop. If the loop has radius 16.0 m, what is the linear speed at the top

United states may not necessarily be expected to do so in : Businesses large and small now compete in a truly global economy. To be successful in another country it is essential to understand and appreciate the cultural differences that exist. Business practices and ideas that work well here in the

User Account

All Pages