« previous next »

Author Question: In an RL series circuit connected to a dc source and a switch, the inductor gets 40 of its maximum ... (Read 16 times)

lidoalex

  • Hero Member
  • *****
  • Posts: 538
on: Jul 29, 2018
In an RL series circuit connected to a dc source and a switch, the inductor gets 40 of its maximum current 1.8 s after the switch is closed at t = 0 s. What is the time constant of this circuit?
 
  A) 0.80 s
  B) 1.5 s
  C) 2.5 s
  D) 3.5 s
  E) 5.5 s

Question 2

According to general relativity, a photon emitted by a star
 
  A) loses energy.
  B) reduces in frequency.
  C) is red-shifted.
  D) all of the above
  E) none of the above


lkoler

  • Sr. Member
  • ****
  • Posts: 358
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

Answer: D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Faith Ringgold, Tar Beach, Part I of the series Woman on a Bridge. Faith Ringgold, Tar Beach, Part I of the series Woman on a Bridge.
Eleanor Antin, My Kingdom Is the Right Size, from the series The King of Solana Beach. Eleanor Antin, My Kingdom Is the Right Size, from the series The King of Solana Beach.
Fourier series - Complex Waves: Non-sinusoidal wave patterns Fourier series - Complex Waves: Non-sinusoidal wave patterns
Apply the cold source, and ask for immediate feedback. Conform the cold source to the shape of the ... Apply the cold source, and ask for immediate feedback. Conform the cold source to the shape of the ...
Getting Connected Getting Connected
Find the voltage, current and power for each resistor in the circuit below Find the voltage, current and power for each resistor in the circuit below
Video: The Pressure Flow Model in a Plant

For a complete list of videos, visit our video library