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

Author Question: High frequency alternating current is passed through a solenoid that contains a solid copper core ... (Read 90 times)

soccerdreamer_17

  • Hero Member
  • *****
  • Posts: 552
on: Jul 28, 2018
High frequency alternating current is passed through a solenoid that contains a solid copper core insulated from the coils of the solenoid. Which statement is correct?
 a. A copper core remains cool no matter what the frequency of the current in the solenoid is.
  b. The copper core remains cool because the induced emf is parallel to the solenoid axis and fluctuates rapidly.
  c. The copper core heats up because an emf parallel to the solenoid axis is induced in the core.
  d. The copper core heats up because circular currents around its axis are induced in the core.
  e. The copper core heats up because the electric field induced in the copper is parallel to the magnetic field produced by the solenoid.

Question 2

The Sun's photosphere is, by mass, about 25
 a. helium.
  b. carbon.
  c. hydrogen.
  d. oxygen.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Sassygurl126

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

a


soccerdreamer_17

  • Member
  • Posts: 552
Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

Dominic

  • Member
  • Posts: 328
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Crying Frequency in the Early Months In their first months of life, infants often cry for no appare Crying Frequency in the Early Months In their first months of life, infants often cry for no appare
Using the cursors on the oscilloscope, the high- and low-oxygen sensor values can be displayed on ... Using the cursors on the oscilloscope, the high- and low-oxygen sensor values can be displayed on ...
Drawing of Central PompeII In Its Current State Drawing of Central PompeII In Its Current State
The distribution of high-energy, nutritious biscuits was a lifeline in the first days after the 2010 The distribution of high-energy, nutritious biscuits was a lifeline in the first days after the 2010
The Frequency Distribution Curve of a Drug The Frequency Distribution Curve of a Drug
Frequency of Heterozygotes for Some Recessive Traits in Several Populations Frequency of Heterozygotes for Some Recessive Traits in Several Populations
Video: Audiology

For a complete list of videos, visit our video library