ZuoTi.Pro
Question

The electron beam inside an old television picture tube is 0.40 mm in diameter and carries a current of 50 μA. This electron beam impinges on the inside of the picture tube screen ▼ Part A How many electrons strike the screen each second? electrons Submit ▼ Part B What is the current density in the electron beam? Express your answer with the appropriate units -Value A/m Submit uest Answer

science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

3 diauet 江上 ビ st 2

0 0
Add a comment
Know the answer?
Add Answer to:
The electron beam inside an old television picture tube is 0.40 mm in diameter and carries...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • The electron beam inside an old television picture tube is 0.40 mm in diameter and carries...

    The electron beam inside an old television picture tube is 0.40 mm in diameter and carries a current of 50 μA. This electron beam impinges on the inside of the picture tube screen. A) How many electrons strike the screen each second? B) What is the current density in the electron beam? C) The electrons move with a velocity of 3.2 ×10^7 m/s. What electric field strength is needed to accelerate electrons from rest to this velocity in a distance...

  • Q) The electron beam inside an old television picture tube is 0.40 mm in diameter and...

    Q) The electron beam inside an old television picture tube is 0.40 mm in diameter and carries a current of 50 μA. This electron beam impinges on the inside of the picture tube screen. Part A How many electrons strike the screen each second? Ans: 3.1×1014 electrons Part B: What is the current density in the electron beam? Ans: J J = 400 Am2 Part C: The electrons move with a velocity of 3.6 ×107 m/s. What electric field strength...

  • The electron beam inside an old television picture tube is 0.40 mm in diameter and carries...

    The electron beam inside an old television picture tube is 0.40 mm in diameter and carries a current of 50 μA. This electron beam impinges on the inside of the picture tube screen. PART C The electrons move with a velocity of 3.4 ×107 m/s. What electric field strength is needed to accelerate electrons from rest to this velocity in a distance of 5.0 mm? PART D Each electron transfers its kinetic energy to the picture tube screen upon impact....

  • Hi, I am having trouble answering the following physics question. The electron beam inside a television...

    Hi, I am having trouble answering the following physics question. The electron beam inside a television picture tube is 0.500mm in diameter and carries a current of 53.0 ?A. This electron beam impinges on the inside of the picture tube screen. a) How many electrons strike the screen each second? b) What is the current density in the electron beam? Express your answer with the units A/m^2. c) The electrons move with a velocity of 4.50

  • The picture tube in a particular television draws a current of 20 A. How many electrons...

    The picture tube in a particular television draws a current of 20 A. How many electrons strike the viewing screen every second?

  • Early black-and-white television sets used an electron beam to draw a picture on the screen. The...

    Early black-and-white television sets used an electron beam to draw a picture on the screen. The electrons in the beam were accelerated by a voltage of 3.0 kV; the beam was then steered to different points on the screen by coils of wire that produced a magnetic field of up to 0.66 T . A. What is the speed of electrons in the beam? Express your answer with the appropriate units. v= __________ B. What acceleration do they experience due...

  • In a television picture tube, electrons strike the screen after being accelerated from rest through a...

    In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 24 600 V. The speeds of the electrons are quite large, and for acourate calculations of the speeds, the effects of special relativity must be taken into account. Ignoring such effects, find the electron speed just before the electron strikes the screen. Select Tutal

  • The picture tube in an old black-and-white television uses magnetic deflection coils rather than electric deflection...

    The picture tube in an old black-and-white television uses magnetic deflection coils rather than electric deflection plates. Suppose an electron beam is accelerated through a 51.0-kV potential difference and then through a region of uniform magnetic field 1.00 cm wide. The screen is located 10.9 cm from the center of the coils and is 50.6 cm wide. When the field is turned off, the electron beam hits the center of the screen. Ignoring relativistic corrections, what field magnitude is necessary...

  • The wires leading to and from a 0.12-mm-diameter lightbulb filament are 1.5 mm in diameter. The...

    The wires leading to and from a 0.12-mm-diameter lightbulb filament are 1.5 mm in diameter. The wire to the filament carries a current with a current density of 4.2x105 A/m . Part A What is the current in the filament? Express your answer to two significant figures and include the appropriate units. GHA O ? Value Units Submit Request Answer - Part B What is the current density in the filament? Express your answer to two significant figures and include...

  • Early black-and-white television sets used an electron beam to draw a picture on the screen. The...

    Early black-and-white television sets used an electron beam to draw a picture on the screen. The electrons in the beam were accelerated by a voltage of 3.0 kV; the beam was then steered to different points on the screen by coils of wire that produced a magnetic field of up to 0.56 T . a.What is the speed of electrons in the beam? b. What acceleration do they experience due to the magnetic field, assuming that it is perpendicular to...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT