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 32 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
Gracias!

patma1981

  • Member
  • Posts: 292
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

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.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

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?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Internal view of the heart illustrating the heart chambers, heart layers, and major blood vessels as Internal view of the heart illustrating the heart chambers, heart layers, and major blood vessels as
The proportion of men and women with elevated blood pressure or taking hypertension medication incre The proportion of men and women with elevated blood pressure or taking hypertension medication incre
Acquired resistance. Acquired resistance.
Localizing the Source of High-Frequency Sounds Localizing the Source of High-Frequency Sounds
Active range of motion (AROM) tests for the shoulder. A, Apley Scratch Test. B and C, Internal ... Active range of motion (AROM) tests for the shoulder. A, Apley Scratch Test. B and C, Internal ...
The figure shows an LR circuit with a switch and a 240-volt battery. At the instant the switch ... The figure shows an LR circuit with a switch and a 240-volt battery. At the instant the switch ...
Video: Introduction to Breast Cancer

For a complete list of videos, visit our video library