Ring Charge Electric Field

TRUE OR FALSE1. A moving electric charge generates electric field. 2.A magnetic field induces electric charge movement producing an electric current.3. In a electromagnetic wave, the electric field and magnetic field are perpendicular to one another.4. The same or light charges attracts.5. Opposite or unlike charges repel. 6. Hanz Christian Oersted conducted the induction ring experiment. 7. Electric field move to side to side.

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1. TRUE OR FALSE1. A moving electric charge generates electric field. 2.A magnetic field induces electric charge movement producing an electric current.3. In a electromagnetic wave, the electric field and magnetic field are perpendicular to one another.4. The same or light charges attracts.5. Opposite or unlike charges repel. 6. Hanz Christian Oersted conducted the induction ring experiment. 7. Electric field move to side to side.

Answer:

1.T

2.T

3.T

4.F

5.F

6.T

7.F

Explanation:

sorry nalang kung mali

2. 1. A circular ring of charge of radius b has a total charge q uniformly distributed around it. Whatwould be the magnitude of the electric field in the center of the ring? Support your answer.

Answer:

the equal magnitude radially directed field contributions add to zero.

3. 1. Electric motors are devices that convert ___ energy into energy.A. electrical; mechanical C. chemical; potentialB. mechanical; electrical D. mechanical; kinetic2. What two forces are required for generators and electric motors to work?A. magnetism and thermal C. electricity and magnetismB. electricity and thermal D. magnetism and radiant3. What word best fits this definition: A device which converts electrical energy into mechanical energy usually through the rotation of an electromagnet in the field of stationary magnet.A. Armature B. electromagnet C. motor D. system4. The rotating part of a motor.A. System B. brush C. electromagnet D. armature5. The contacts between the armature and the source of power in a motor.A. Electromagnet B. ferromagnetic C. force field D. brushes6. What is the part of a simple D.C motor that reverses the direction of current through the coil every half-cycleA. the armature B. the brushes C. the commutator D. slip rings7. A magnet’s magnetic field exists _.A. around the entire magnet C. only on the north poleB. on both poles D. only on the south pole8. Opposite poles .A. are balanced B. attract C. push away D. transfer electrons9. What is magnetism?A. a contact forceB. a force created by magnetsC. an invisible force that attracts electrically charged particlesD. energy created by magnets10. When two magnets attract, they _ .A. Change Color B. Get Colder C. Pull Together D. Push Apart11. Magnets have a north and a south .A. Color B. pole C. region D. shape12. A generator converts _ into .A. Electrical energy; mechanical energyB. Electromagnetic induction; electrical energyC. AC; DCD. Mechanical; electrical13. Electromagnetic induction was discovered byA. Thomas Edison C. Benjamin FranklinB. Nikola Tesla D. Michael Faraday14. When the rate of motion of the same coil of wire is increased through the same magnetic field, the wire will move across the magnetic lines ___.A. faster, producing less induced currentB. slower, producing less induced currentC. faster, producing more induced currentD. slower, producing more induced current15. What basic principle enables ALL electric generators to operate?A. A closed-loop conductor within a changing magnetic field will have an induced electromotive force.B. A current-carrying conductorplacedwithinamagneticfieldwillexperience a magnetic force.C. Iron is the only element that is magnetic.D. Opposite electric charges attract and like charges repel.

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1. Electric motors are devices that convert _______ energy into ______ energy.

A. electrical; mechanical

2. What two forces are required for generators and electric motors to work?

C. electricity and magnetism

3. What word best fits this definition: A device which converts electrical energy into mechanical energy usually through the rotation of an electromagnet in the field of stationary magnet.

C. motor

4. The rotating part of a motor.

Armature

5. The contacts between the armature and the source of power in a motor.

A. Electromagnet

6. What is the part of a simple D.C motor that reverses the direction of current through the coil every half-cycle

C. the commutator

7. A magnet’s magnetic field exists ___.

A. around the entire magnet

8. Opposite poles ____.

B. attract

9. What is magnetism?

C. an invisible force that attracts electrically charged particles

10. When two magnets attract, they _______ .

C. Pull Together

11. Magnets have a north and a south ______ .

B. pole

12. A generator converts _______ into ______ .

D. Mechanical; electrical

13. Electromagnetic induction was discovered by

D. Michael Faraday

14. When the rate of motion of the same coil of wire is increased through the same magnetic field, the wire will move across the magnetic lines _______.

C. faster, producing more induced current

15. What basic principle enables ALL electric generators to operate?

A. A closed-loop conductor within a changing magnetic field will have an induced electromotive force.

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4. 1. EM waves travel at the speed which is constant in a given medium. Which gives the correct speed of EM waves in a vacuum? a. 3 X 108m/s c. 3 X 1010m/s b. 3 X 108m/s d. 3 X 1018m/s2. which of the following statements is not a characteristic of electromagnetic wave?a. EM waves can travel through vacuumb. Em waves have an electric field that travels parallel with the magnetic fieldc. Em waves form when moving Charge particles transfer energy through a fieldd. Em waves are disturbance in a field rather than in a medium3. which pair is ionizing radiation?a. microwave and radio waveb. ultraviolet ray and x-rayc. ultraviolet ray and gamma raysd. x-ray and gamma ray4. myopia us a condition in which light rays focus in front of the eye's retina instead of, on the retinawhat type of lens is used to correct myopia or nearsightedness?a. convex mirrorb. concave mirrorc. plane mirrord. none of the above5. all of the following are uses convex lenses, except on. Whick one is NOT?a. microscopeb. peep holesc. projectord. flashlight6. meniscus lens is used to correct what type eye defeat?a. cataractb. myopiac. glaucomad. hyperopia7. which of the following DOES NOT describe the difference between the AC generator and the DC generatora. AC generator produces AC electrical power whereas DC generator produces DC electrical powerb. In AC generator the current reverses periodicallyc. in DC generator split rings are used, they wear out quickly, in AC generator slip rings are used, so they have high efficiencyd. AC generator are used for small domestic applications whereas DC generator used to power large motors

Answer:

sorry Po Hindi ko Po alam

Answer:

Number 1 po ay letter A po

5. 7. Which of these objects will NOT be attracted to a magnet?A five peso coinC. steelB. nailD. wooden ladle8. Which of these objects can be attracted by magnets?A. ballC. slippersB. nailD. rug9. A material was attracted to a magnet. What could the materialcontain?A. ironC. plasticB. cementD. silver10. An object is a magnet if it attracts aA. cottonc. plasticB. metalD. rubber11. The shape of this magnet makes it very weak because the poweris focused on the poles and less at the sides.A. bar magnetC. ring magnetB. horseshoe magnetD. rectangular magnet12. The shape of this magnet is the strongest because the poles pointin the same direction.A. bar magnetC. ring magnetB. horseshoe magnet D. rectangular magnet13. This English physician and natural philosopher compiled all theinformation regarding magnetism during his time.A. Jose RizalC. Thomas EdisonB. Joseph HenryD. William Gilbert14. What was Michael Faraday best known for?A. electricityC. electromagnetic inductionB. electromagnetD. compilation of magnets15. Magnets may attract or repel because of theA. positive and negative charges.B. presence of an invisible field.C. different poles.D. materials near the magnet.

Answer:

7.D

8.B

9.A

10.B

11.D

12.B (horseshoe magnets are in 'U' shape, therefore the poles has the same direction)

13.B (Joseph Henry is an American scientist know for his invention "electromagnets")

14.C

15.A

6. (A. bar magnetB horseshoe magne17. The shape of this magnet is the strongest because the poles point in the samedirection.(A. bar magnet B. horseshoe magnet C. ring magnet D. rectangular magnet)18. This English physician and natural philosopher compiled all theinformation regarding magnetism during his time.A. Jose RizalC. Thomas EdisonB. Joseph HenryD. William Gilbert19. What was Michael Faraday best known for?A. electricityC. electromagnetic inductionB. electromagnetD. compilation of magnets20. Magnets may attract or repel because of theA. positive and negative charges.C. different poles.B. presence of an invisible field.D. materials near the magnet.

Answer:

16-b

17-b

18-d

19-c

20-b

2. 1. A circular ring of charge of radius b has a total charge q uniformly distributed around it. Whatwould be the magnitude of the electric field in the center of the ring? Support your answer.​

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2. 1. A circular ring of charge of radius b has a total charge q uniformly distributed around it. Whatwould be the magnitude of the electric field in the center of the ring? Support your answer.