« previous next »

Author Question: A 4.0-mH coil carries a current of 5.0 A. How much energy is stored in its magnetic field? A) 10 ... (Read 66 times)

piesebel

  • Hero Member
  • *****
  • Posts: 565
on: Jul 29, 2018
A 4.0-mH coil carries a current of 5.0 A. How much energy is stored in its magnetic field?
 
  A) 10 mJ B) 2.0 mJ
  C) 20 mJ D) none of the given answers

Question 2

A capacitor C is connected in series with a resistor R across a battery and an open switch. If a second capacitor of capacitance 2C is connected in series with the first one, the time constant of the new RC circuit will be
 
  A) smaller than before. B) larger than before.
  C) the same as before. D) variable.
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Sammyo

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

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

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Hydrogen sulfide as an energy source for chemoautotrophic bacteria in the deep sea. Hydrogen sulfide as an energy source for chemoautotrophic bacteria in the deep sea.
Hare running in open field Hare running in open field
Free Energy Enzymes Free Energy Enzymes
Edmund Husserl (1859–1938). German philosopher who founded the field of phenomenology. In his ... Edmund Husserl (1859–1938). German philosopher who founded the field of phenomenology. In his ...
Measuring the resistance of an HEI pickup coil using a digital multimeter set to the ohms position. ... Measuring the resistance of an HEI pickup coil using a digital multimeter set to the ohms position. ...
Physics: Power, Energy and Time Physics: Power, Energy and Time
Video: Lipid digestion - mouth, stomach and small intestine

For a complete list of videos, visit our video library