Sign Up

Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.

Have an account? Sign In

Have an account? Sign In Now

Sign In

Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.

Sign Up Here

Forgot Password?

Don't have account, Sign Up Here

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Have an account? Sign In Now

You must login to ask question.(6)

Forgot Password?

Need An Account, Sign Up Here

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Sign InSign Up

ITtutoria

ITtutoria Logo ITtutoria Logo

ITtutoria Navigation

  • Home
  • Python
  • Science
  • Java
  • JavaScript
  • Reactjs
  • Nodejs
  • Tools
  • QA
Ask A Question

Mobile menu

Close
Ask a Question
  • Home
  • Python
  • Science
  • Java
  • JavaScript
  • Reactjs
  • Nodejs
  • Tools
  • QA
Home/Questions/The switch in the figure has been closed for a very long time
Next
Answered
ptntuto
  • 16
ptntuto
Asked: April 10, 20222022-04-10T08:17:30+00:00 2022-04-10T08:17:30+00:00In: Physics

The switch in the figure has been closed for a very long time

  • 16

The switch in the figure has been closed for a very long time.

Part A: What is the charge on the capacitor?

Part B: The switch is opened at t= 0s. At what time has the charge on the capacitor decreased to 29% of its initial value?


Revelant knowledge 

The capacitor is an electronic device that stores electricity through the form of an electronic field. It is an non-active electronic device equipped with 2 connections.

The result of a capacitor can be described by the term capacitance. There is some form of capacitance between electrical conductors that are in close proximity to each other in an circuit the capacitor is a device that is designed to increase the capacitance of an electrical circuit. The capacitor was initially referred to as a condenser. The name and its synonyms are still used extensively in a variety of languages, however seldom in English The most important exception is condenser microphones which are also referred to as capacitor microphones.

the capacitorthe charge
  • 2 2 Answers
  • 38 Views
  • 0 Followers
  • 0
Answer
Share
  • Facebook
  • Report

2 Answers

  • Voted
  • Oldest
  • Recent
  • Random
  1. Best Answer
    ptntuto
    2022-04-15T07:03:41+00:00Added an answer on April 15, 2022 at 7:03 am

    • 13
    • Reply
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
      • Report
  2. tonytutoria
    2022-04-10T09:00:54+00:00Added an answer on April 10, 2022 at 9:00 am
    Concepts and Reason

    This problem can be solved using Ohm’s law, series resistance, Ohm’s law, expression of charge on capacitor and charge on capacitor after t

    Calculate the equivalent resistance first, then calculate current in circuit. Next calculate potential difference. Finally calculate charge across capacitor. In part (B), calculate time required to charge capacitor to 29\% .

    Fundamentals

    This is the equivalent resistance to series resistance.

    {R_{{\rm{eq}}}} = {R_1} + {R_2}

    Here {R_1}

    Ohm’s law

    V = IR

    Here, I

    The capacitor’s charge is:

    Q = CV

    Here Q

    After t, the charge on the capacitor is $0.

    Q = {Q_{{\rm{max}}}}{e^{\frac{{ – t}}{{RC}}}}

    Here, 29\% 0

    The capacitor behaves as an open circuit when the switch is closed for a long time, and there is no current flowing from it.

    Below is an image that shows the circuit condition at 29\% 1


    t=ας
60 Ω
Σ 10 Ω
40 V
,
40 Ως
2.0
F

    Use the series resistance formula to calculate equivalent resistance.

    The series resistance equivalent is:

    {R_{{\rm{eq}}}} = {R_1} + {R_2}

    Here {R_1}

    Substitute 29\% 4

    29\% 5

    Use Ohm’s law to calculate the current.

    Ohm’s law

    V = IR

    Here, I

    Modify the equation V = IR

    29\% 9

    Substitute {R_{{\rm{eq}}}} = {R_1} + {R_2}0

    {R_{{\rm{eq}}}} = {R_1} + {R_2}1

    Now, calculate the voltage across {R_{{\rm{eq}}}} = {R_1} + {R_2}2

    {R_{{\rm{eq}}}} = {R_1} + {R_2}3

    The maximum capacitor capacity is now

    The capacitor’s charge is:

    {R_{{\rm{eq}}}} = {R_1} + {R_2}4

    Here 29\% 0

    Substitute {R_{{\rm{eq}}}} = {R_1} + {R_2}6

    {R_{{\rm{eq}}}} = {R_1} + {R_2}7

    Below is an image of the circuit at {R_{{\rm{eq}}}} = {R_1} + {R_2}8


    t= 0
60 Ω
40 ΩΣ
σοι και
40 V
-
2.0 μF

    Calculate the equivalent resistance {R_{{\rm{eq}}}} = {R_1} + {R_2}8

    The series resistance equivalent is:

    {R_{{\rm{eq}}}} = {R_1} + {R_2}

    Here {R_1}

    Substitute {R_1}2

    {R_1}3

    Now, calculate the capacitor charge after t

    After t, the charge on the capacitor is $0.

    Q = {Q_{{\rm{max}}}}{e^{\frac{{ – t}}{{RC}}}}

    Here, 29\% 0

    Modify the equation Q = {Q_{{\rm{max}}}}{e^{\frac{{ – t}}{{RC}}}}

    {R_1}9

    Substitute V = IR0

    V = IR1

    Convert second to millisecond

    V = IR2Ans Part A

    The charge on the capacitor is V = IR3Part A

    The time required is V = IR4

    • 10
    • Reply
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
      • Report
Leave an answer

Leave an answer
Cancel reply

Browse

Sidebar

Ask A Question

Stats

  • Questions 2k
  • Answers 3.2k
  • Best Answers 1.8k
  • Users 348
  • Popular
  • Answers
  • James Portman

    Javascript count character in string samples

    • 6 Answers
  • tptutoria

    A large offshore oil platform needs to transmit signals between ...

    • 6 Answers
  • lyytutoria

    What is the magnitude of the torque on the current ...

    • 6 Answers
  • lyytutoria
    lyytutoria added an answer The cause: You encounter this error because you are attempting… June 28, 2022 at 3:52 am
  • lyytutoria
    lyytutoria added an answer The cause: The software may not have been completely removed… June 28, 2022 at 3:50 am
  • lyytutoria
    lyytutoria added an answer The cause: You have got this error because you are… June 28, 2022 at 2:57 am
  • How To Create a Dictionary in C++? A Comprehensive Guide
  • List Of Lists In Python: How To Create and Utilize Effectively
  • How to Split String by space in C++
  • How To Convert A Pandas DataFrame Column To A List
  • How To Avoid MemoryError In Python
  • Static Or Class Variables In Python
  • How to Replace Multiple Characters in A String in Python?
  • How To Remove Special Characters From String Python

Trending Tags

acceleration accounting acid angle atom atoms attributeerror balance base bond calculate capacitor carbon cash cell charge chemical reaction chemistry circuit company components compound compounds conjugate constant cost current cycle data decreasing determine diagram difference direction distance draw electric electron electrons energy equilibrium equivalent expenses flux force function graph hydrogen identify income iupac light magnetic magnitude major maximum mitosis molar molecular molecule molecules neutral orbital organic oxidation physics polar potential predict pressure product products proton python python-3.x question rank rate reaction reactions reagent reagents relationship resistance resistor science solubility speed strength string structure structures tension typeerror value valueerror values velocity voltage wavelength

Explore

  • Let’s Share Knowledge
  • Questions
    • New Questions
    • Trending Questions
  • Help

Footer

ITtutoria

ITtutoria

This website is user friendly and will facilitate transferring knowledge. It would be useful for a self-initiated learning process

Tutorial

  • Home
  • Python
  • Science
  • Java
  • JavaScript
  • Reactjs
  • Nodejs
  • Tools
  • QA

Legal Stuff

  • About Us
  • Terms of Use
  • Privacy Policy
  • Contact Us

Help

  • Knowledge Base
  • Support

Follow

© 2022 Ittutoria. All Rights Reserved.

Insert/edit link

Enter the destination URL

Or link to existing content

    No search term specified. Showing recent items. Search or use up and down arrow keys to select an item.