Question

Q4. One of the following statements is a correct interpretation of Poynting's theorem - which one?...

Q4. One of the following statements is a correct interpretation of Poynting's theorem - which one?

(A) The decrease in energy within the electric and magnetic fields over a certain volume always has the same magnitude as the energy that flows away from the volume.

(B) The work that the electromagnetic force exerts on a configuration of charges over a certain volume, has the same magnitude as the decrease in energy within the electric and magnetic fields over this volume - plus the energy that is flowing away from the volume.

(C) The energy within the electric and magnetic fields over a certain volume can only fluctuate if energy flows away from or into this particular volume.

_____________________________________________

Thank you in advance!

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

if you have any doubt related to the answer please let me know in comments. Give a thumbs up if you like the answer.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. Which of the following statements about the direction of a magnetic force is always true?...
1. Which of the following statements about the direction of a magnetic force is always true? (Note: More than one answer choice may be correct) a)The direction of the magnetic force on a moving charged particle is parallel to the direction of the external magnetic field. b)The direction of the magnetic force on a moving charged particle is parallel to the direction of the charged particle's velocity. c)The direction of the magnetic force on a moving charged particle is perpendicular...
Which one of the following statements concerning electromagnetic (EM) waves is FALSE? Also expalin your reasoning....
Which one of the following statements concerning electromagnetic (EM) waves is FALSE? Also expalin your reasoning. (A) The electric and magnetic fields in EM waves are always perpendicular to each other. (B) Higher frequency waves have more energy than lower frequency waves. (C) EM waves move slower in high-index-of-refraction media. (D) The index of refraction of a medium varies with the wavelength of the incident EM wave. (E) The frequency of EM waves decreases in regions with higher index of...
Which of the following statements is/are true regarding behaviors of charged particles inside electric field? Positive...
Which of the following statements is/are true regarding behaviors of charged particles inside electric field? Positive charges are accelerated by electric fields toward points at higher electric potential; If the electric field at a certain region is zero, then the electric potential at the same region is constant; If a negative charge moves in the direction of the electric field, the field does positive work and the potential energy increases If a positive charge moves opposite to the electric field,...
Which of the following statements correctly compare the ideal parallel-plate capacitor to the ideal solenoid? Select...
Which of the following statements correctly compare the ideal parallel-plate capacitor to the ideal solenoid? Select all that apply. A) The direction of the uniform electric field in the capacitor is parallel to the plates making up the capacitor, while the direction of the uniform magnetic field is parallel to the axis of the solenoid. B) In the ideal capacitor changing the distance between the plates does not affect the electric field. In the ideal solenoid changing the radius of...
If you climb to the top of Mount Everest (nearly 9 km above sea level) the...
If you climb to the top of Mount Everest (nearly 9 km above sea level) the gravitational force would be Select one: a. the same. b. much weaker because you are further away from the earth. c. a little bit weaker because you are further away from centre of the earth. d. a little bit stronger because you are further away from centre of the earth. e. much stronger because you are further away from the earth. An electromagnetic wave...
According to the Rybczynski theorem, which of the following statements are correct? Select one or more:...
According to the Rybczynski theorem, which of the following statements are correct? Select one or more: a. In the source nation, the immigration will lead to a decrease in the output of capital-intensive products. b. In the receiving country, the immigration will cause an increase in the output of both the labor-intensive and the capital-intensive goods. c. In the source nation, the immigration will lead to a decrease in the output of labor-intensive products. d. In the receiving country, the...
Which of the following statements is CORRECT? A) One defect of the IRR method is that...
Which of the following statements is CORRECT? A) One defect of the IRR method is that it does not take account of cash flows over a project’s full life. B) One defect of the IRR method is that it does not take account of the time value of money. C) One defect of the IRR method is that it does not take account of the cost of capital. D) One defect of the IRR method is that it values a...
1) Which one of the following is not a property of EM waves in a vacuum?...
1) Which one of the following is not a property of EM waves in a vacuum? a) The EM wave is longitudinal, the electric and magnetic fields oscillate along the direction of propagation. b) The electric and magnetic fields oscillate in phase with each other.   c) EM waves in a vacuum travel at a speed of 3.00 × 108 m/s, independent of frequency. 2) Which one of the following statements is correct? a) A complete description of light requires consideration...
1.Which of the following statements about the direction of a magnetic force is always true? (Note:...
1.Which of the following statements about the direction of a magnetic force is always true? (Note: More than one answer choice may be correct a. The direction of the magnetic force on a moving charged particle is perpendicular to the direction of the external magnetic field. b. The direction of the magnetic force on a moving charged particle is parallel to the direction of the charged particle's velocity. c. The direction of the magnetic force on a moving charged particle...
Which of the following statements are TRUE? Note that there may be more than one correct...
Which of the following statements are TRUE? Note that there may be more than one correct answer; select all that are true. 1. a) All else being equal, the standard deviation of the sampling distribution of the sample mean will be smaller for n = 10 than for n = 40. b) The value of a statistic does not vary from sample to sample. c) Statistics have sampling distributions. d) The value of a parameter does not vary from sample...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT