Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 37: excercise 8 (page 1081)

The current in a Crookes tube is10nA. How many electrons strike the face of the glass tube each second?

Short Answer

Expert verified

Number of electrons=625×108

Step by step solution

01

Given information:

We have given that

Current (I)=10nA

Time (T)=1s

Here we need to calculate the number of electrons striking the face of glass tube each second through the formulaI=QTwhere I is the current and Q is the total charge of all electrons flowing in the tube in the given time T.

02

Explanation:

Charge on electron (e)=1.6×10-19C

Now, let the number of electrons be=N

According to the formula: I=QT

I=NeT Q=Ne

10nA=N1.6×10-19C1s

N=625×108

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Express in eV(or keVor MeVif more appropriate):

a. The kinetic energy of an electron moving with a speed of 5.0×106m/s.

b. The potential energy of an electron and a proton 0.10nmapart.

c. The kinetic energy of a proton that has accelerated from rest through a potential difference of 5000V.

A cosmic ray travels 60kmthrough the earth’s atmosphere in400ms, as measured by experimenters on the ground. How long does the journey take according to the cosmic ray?

A 0.80-μmm-diameter oil droplet is observed between two parallel electrodes spaced 11mmapart. The droplet hangs motionless if the upper electrode is20Vmore positive than the lower electrode. The density of the oil is 885kg/m3.

a. What is the droplet’s mass?

b. What is the droplet’s charge?

c. Does the droplet have a surplus or a deficit of electrons? How many?

Particle A has half the mass and twice the speed of particle B. Is the momentum PA less than, greater than, or equal to PB? Explain.


9. Electrons pass through the parallel electrodes shown in FIGURE EX37.9 with a speed of 5×106m/s towards left. What magnetic field strength and direction will allow the electrons to pass through without being deflected? Assume that the magnetic field is confined to the region between the electrodes.
See all solutions

Recommended explanations on Physics Textbooks

Thermodynamics

Read Explanation

Energy Physics

Read Explanation

Famous Physicists

Read Explanation

Measurements

Read Explanation

Geometrical and Physical Optics

Read Explanation

Fields in Physics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free