This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A series LR circuit contains an emf source of 14V having no internal resistance, a resistor, a 34 H ... (Read 80 times)

Starlight

  • Hero Member
  • *****
  • Posts: 567
on: Jul 29, 2018
A series LR circuit contains an emf source of 14V having no internal resistance, a resistor, a 34 H inductor having no appreciable resistance, and a switch.
 
  If the emf across the inductor is 80 of its maximum value 4.0 s after the switch is closed, what is the resistance of the resistor?
  A) 14
  B) 1.9
  C) 1.5
  D) 5.0

Question 2

What resistance should be added in series with a 3.0-H inductor to complete an LR circuit with a time constant of ?
 
  A) 0.75 k
  B) 12
  C) 0.75
  D) 2.5


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Jane

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

A


Starlight

  • Member
  • Posts: 567
Reply 2 on: Jul 29, 2018
Wow, this really help

sultana.d

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

A client is having an endoscopy performed by a physician who views the upper gastrointestinal intern A client is having an endoscopy performed by a physician who views the upper gastrointestinal intern
The kidney. Illustration of a sectioned kidney, which reveals its internal features. The kidney. Illustration of a sectioned kidney, which reveals its internal features.
A dim headlight indicates excessive resistance in fuel pump circuit. A dim headlight indicates excessive resistance in fuel pump circuit.
Internal female reproductive tract. Internal female reproductive tract.
Introduction to Disease Resistance Introduction to Disease Resistance
Change in Blood Pressure through the Systemic Circuit Change in Blood Pressure through the Systemic Circuit
Video: Glucose Evaluation Procedure

For a complete list of videos, visit our video library