In an electromagnetic wave, the ratio of the magnitudes of the electric field to the magnet field is equal to what?

In an electromagnetic wave, the ratio of the magnitudes of the electric field to the magnet field is equal to what?  
by

1 Answer

Answer :

ANSWER: THE SPEED OF LIGHT or C
by

Related questions

Two vectors are said to be equal if – (1) only their magnitudes are same (2) only their directions are same (3) both magnitude and direction are same (4) magnitudes are same but directions are opposite

Description : Two vectors are said to be equal if – (1) only their magnitudes are same (2) only their directions are same (3) both magnitude and direction are same (4) magnitudes are same but directions are opposite

Last Answer : (3) both magnitude and direction are same Explanation: If the magnitude as well as direction of two vectors are equal, then they are known as equal vectors. In other words, two vectors are ... headed towards the same direction. For two equal vectors, their directed line segments must be parallel.

The minimum number of forces with unequal magnitudes whose vector sum can equal zero is: w) 1 x) 2 y) 3 z) 4

Description : The minimum number of forces with unequal magnitudes whose vector sum can equal zero is: w) 1 x) 2 y) 3 z) 4

Last Answer : ANSWER: Y -- 3

Two forces have magnitudes of 11 newtons and 5 newtons. The magnitude of their sum could NOT be equal to which of the following values? w) 16 newtons x) 5 newtons y) 9 newtons z) 7 newtons

Description : Two forces have magnitudes of 11 newtons and 5 newtons. The magnitude of their sum could NOT be equal to which of the following values? w) 16 newtons x) 5 newtons y) 9 newtons z) 7 newtons 

Last Answer : ANSWER: X -- 5 NEWTONS

Two vectors are said to be equal if (1) only their magnitudes are same (2) only their directions are same (3) both magnitude and direction are same (4) magnitudes are same but directions are opposite

Description : Two vectors are said to be equal if (1) only their magnitudes are same (2) only their directions are same (3) both magnitude and direction are same (4) magnitudes are same but directions are opposite 

Last Answer : both magnitude and direction are same

What is meant by referring to electromagnetic waves as having circular polarization? A. The electric field is bent into a circular shape. B. The electric field rotates C. The electromagnetic wave continues to circle the earth D. The electromagnetic wave has been generated by a quad antenna

Description : What is meant by referring to electromagnetic waves as having circular polarization? A. The electric field is bent into a circular shape. B. The electric field rotates C. The electromagnetic wave continues to circle the earth D. The electromagnetic wave has been generated by a quad antenna

Last Answer : B. The electric field rotates

What are electromagnetic waves? A. Alternating currents in the core of an electromagnet B. A wave consisting of two electric fields at right angles to each other C. A wave consisting of an electric field and a magnetic field at right angles to each other D. A wave consisting of two magnetic fields at right angles to each other

Description : What are electromagnetic waves? A. Alternating currents in the core of an electromagnet B. A wave consisting of two electric fields at right angles to each other C. A wave consisting of an electric field ... to each other D. A wave consisting of two magnetic fields at right angles to each other

Last Answer : C. A wave consisting of an electric field and a magnetic field at right angles to each other

What are electromagnetic waves? A. A wave consisting of two magnetic fields at right angles to each other B. A wave consisting of an electric field and a magnetic field at right angles to each other. C. Alternating currents in the core of an electromagnet D. A wave consisting of two electric fields at right angles to each other

Description : What are electromagnetic waves? A. A wave consisting of two magnetic fields at right angles to each other B. A wave consisting of an electric field and a magnetic field at right angles to each ... core of an electromagnet D. A wave consisting of two electric fields at right angles to each other

Last Answer : B. A wave consisting of an electric field and a magnetic field at right angles to each other.

An electromagnetic wave is ________ polarized when the electric field lies wholly in one plane containing the direction of propagation. A. Horizontally B. Linearly C. Circularly D. Vertically

Description : An electromagnetic wave is ________ polarized when the electric field lies wholly in one plane containing the direction of propagation. A. Horizontally B. Linearly C. Circularly D. Vertically

Last Answer : B. Linearly

An electromagnetic wave consists of A. a magnetic field only B. both electric and magnetic fields C. an electric field only D. non-magnetic field only

Description : An electromagnetic wave consists of A. a magnetic field only B. both electric and magnetic fields C. an electric field only D. non-magnetic field only

Last Answer : B. both electric and magnetic fields

The power in a electromagnetic wave with electric field and magnetic field intensities 12 and 8 respectively is a) 96 b) 12 c) 8 d) 48

Description : The power in a electromagnetic wave with electric field and magnetic field intensities 12 and 8 respectively is a) 96 b) 12 c) 8 d) 48

Last Answer : d) 48

The electric and magnetic field components in the electromagnetic wave propagation are in phase. State True/False. a) True b) False

Description : The electric and magnetic field components in the electromagnetic wave propagation are in phase. State True/False. a) True b) False

Last Answer : a) True

In electromagnetic waves, the electric field will be perpendicular to which of the following? a) Magnetic field intensity b) Wave propagation c) Both H and wave direction d) It propagates independently

Description : In electromagnetic waves, the electric field will be perpendicular to which of the following? a) Magnetic field intensity b) Wave propagation c) Both H and wave direction d) It propagates independently

Last Answer : c) Both H and wave direction

In an electromagnetic wave, what is the relative orientation of the magnetic and electric fields? w) 180 degrees x) 90 degrees y) 45 degrees z) 22.5 degrees

Description : In an electromagnetic wave, what is the relative orientation of the magnetic and electric fields? w) 180 degrees x) 90 degrees y) 45 degrees z) 22.5 degrees

Last Answer : ANSWER: X -- 90 DEGREES

For an electromagnetic wave traveling in a vacuum, if the magnitude of the intensity of the E field is zero, the magnitude of the intensity of the B field is: w) zero x) a negative maximum y) a positive maximum z) the square root of 2 times the positive maximum

Description : For an electromagnetic wave traveling in a vacuum, if the magnitude of the intensity of the E field is zero, the magnitude of the intensity of the B field is: w) zero x) a negative maximum y) a positive maximum z) the square root of 2 times the positive maximum

Last Answer : ANSWER: W -- ZERO

Flemings "Left hand Rule" is associated with the effect of – (1) Electric field on current (2) Magnetic field on magnet (3) Electric field on magnet (4) Magnetic Field on current

Description : Flemings "Left hand Rule" is associated with the effect of – (1) Electric field on current (2) Magnetic field on magnet (3) Electric field on magnet (4) Magnetic Field on current

Last Answer : (4) Magnetic Field on current Explanation: Whenever, a current carrying conductor comes under a magnetic field, there will be force acting on the conductor and on the other hand, if a conductor ... conductor. In both of the phenomenon, there is a relation between magnetic field, current and force.

Magnetic field can be produced by using A. permanent magnet B. electric current C. temporary magnet D. both A and B

Description : Magnetic field can be produced by using A. permanent magnet B. electric current C. temporary magnet D. both A and B

Last Answer : permanent magnet

Flemings “Left hand Rule” is associated with the effect of (1) Electric field on current (2) Magnetic field on magnet (3) Electric field on magnet (4) Magnetic Field on current

Description : Flemings “Left hand Rule” is associated with the effect of (1) Electric field on current (2) Magnetic field on magnet (3) Electric field on magnet (4) Magnetic Field on current

Last Answer : Magnetic Field on current

Given a  = i + 2j and b = 2i + j, what are the magnitudes of the two vectors? Are these two vectors equal?

Description : Given a  = i + 2j and b = 2i + j, what are the magnitudes of the two vectors? Are these two vectors equal?

Last Answer : Given \(\overset\rightarrow{a}\) = i + 2j and \(\overset\rightarrow{b}\) = 2i + j, ... magnitudes of the two vectors? Are these two vectors equal?

What device in a waveguide system used for stopping or diverting electromagnetic wave as desired? A. Mechanical switch B. Electric switch C. Push-button switch D. Waveguide switch

Description : What device in a waveguide system used for stopping or diverting electromagnetic wave as desired? A. Mechanical switch B. Electric switch C. Push-button switch D. Waveguide switch

Last Answer : D. Waveguide switch

kilohertz (kHz) is a unit which measures? A. Power used by a current of one ampere B. Electromagnetic radio wave frequencies (Answer) C. Voltage D. Electric resistance

Description : kilohertz (kHz) is a unit which measures? A. Power used by a current of one ampere B. Electromagnetic radio wave frequencies (Answer) C. Voltage D. Electric resistance

Last Answer : B. Electromagnetic radio wave frequencies (Answer)

An example for electromagnetic wave propagation is a) refrigerator b) electric fan c) mobile transponder d) relays in actuators

Description : An example for electromagnetic wave propagation is a) refrigerator b) electric fan c) mobile transponder d) relays in actuators

Last Answer : c) mobile transponder

Which physical phenomenon or principle is most often applied in the search for petroleum reservoirs? w) magnetic field distortions x) electromagnetic radiation y) natural radioactive decay of minerals z) acoustic wave transmission and reflection

Description : Which physical phenomenon or principle is most often applied in the search for petroleum reservoirs? w) magnetic field distortions x) electromagnetic radiation y) natural radioactive decay of minerals z) acoustic wave transmission and reflection

Last Answer : ANSWER: Z -- ACOUSTIC WAVE TRANSMISSION AND REFLECTION  

In motor a permanent magnet provides: a. Electric field b. electric flux c. magnetic field d. gravitational field

Description : In motor a permanent magnet provides: a. Electric field b. electric flux c. magnetic field d. gravitational field

Last Answer : d. gravitational field

What is Electromagnetic Wave ?

Last Answer : Waves that do not require any medium to conduct are called electromagnetic waves.

Which one among the following is not an electromagnetic wave? (1) X-Ray (2) R-Ray (3) Cathode Ray (4) Infrared Ray

Description : Which one among the following is not an electromagnetic wave? (1) X-Ray (2) R-Ray (3) Cathode Ray (4) Infrared Ray

Last Answer : (3) Cathode Ray Explanation: In physics, electromagnetic radiation (EMR) refers to the waves (or their quanta, photons) of the electro-magnetic field, propagating (radiating) through space carrying ... includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-, and gamma radiation.

Which electromagnetic radiation is used for satellite communication? (1) Ultraviolet (2) Infrared (3) Microwave (4) Millimeter wave

Description : Which electromagnetic radiation is used for satellite communication? (1) Ultraviolet (2) Infrared (3) Microwave (4) Millimeter wave

Last Answer : (3) Microwave Explanation: Microwave electromagnetic radiation is used for satellite communication.

Which of the following waves is not a transverse wave? w) a wave traveling on a string x) an electromagnetic wave y) a sound wave

Description : Which of the following waves is not a transverse wave? w) a wave traveling on a string x) an electromagnetic wave y) a sound wave

Last Answer : ANSWER: Y -- A SOUND WAVE

Of the following, the type of wave that CANNOT be polarized is w) electromagnetic x) light y) sound z) radio

Description : Of the following, the type of wave that CANNOT be polarized is w) electromagnetic x) light y) sound z) radio

Last Answer : ANSWER: Y -- SOUND

An electromagnetic wave is ALWAYS: w) longitudinal x) polarized y) spherical z) transverse.

Description : An electromagnetic wave is ALWAYS: w) longitudinal x) polarized y) spherical z) transverse.

Last Answer : ANSWER: Z -- TRANSVERSE

In an electromagnetic wave, the E and B fields are both perpendicular to what?

Description : In an electromagnetic wave, the E and B fields are both perpendicular to what?

Last Answer : ANSWER: THE DIRECTION OF THE WAVE or DIRECTION OF WAVE ROPAG 

Which one among the following is not an electromagnetic wave? (1) X-Ray (2) R-Ray (3) Cathode Ray (4) Infrared Ray

Description : Which one among the following is not an electromagnetic wave? (1) X-Ray (2) R-Ray (3) Cathode Ray (4) Infrared Ray

Last Answer : Cathode Ray

Which electromagnetic radiation is used for satellite communication ? (1) Ultraviolet (2) Infrared (3) Microwave (4) Millimeter wave

Description : Which electromagnetic radiation is used for satellite communication ? (1) Ultraviolet (2) Infrared (3) Microwave (4) Millimeter wave

Last Answer : Microwave

According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n1) on another medium (refractive index m2); (A) The angle of incidence is equal to the angle of refraction (B) The angle of refraction r) is given by sin i (C) Both (a) and (b) (D) Neither (a) nor (b)

Description : According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n1) on another medium (refractive index m2); (A) The angle of incidence is equal to the angle of refraction (B) The angle of ... r) is given by sin i (C) Both (a) and (b) (D) Neither (a) nor (b)

Last Answer : Answer: Option B

What is meant by referring to electromagnetic waves as horizontally polarized? A. The electric field is parallel to the earth. B. The magnetic field is parallel to the earth. C. Both the electric and magnetic fields are horizontal D. Both the electric and magnetic fields are vertical

Description : What is meant by referring to electromagnetic waves as horizontally polarized? A. The electric field is parallel to the earth. B. The magnetic field is parallel to the earth. C. Both the electric and magnetic fields are horizontal D. Both the electric and magnetic fields are vertical

Last Answer : A. The electric field is parallel to the earth.

What is meant by referring to electromagnetic waves as horizontally polarized? A. The electric field is parallel to the earth B. Both the electric and magnetic fields are vertical C. Both the electric and magnetic fields are horizontal D. The magnetic fields is parallel to the earth

Description : What is meant by referring to electromagnetic waves as horizontally polarized? A. The electric field is parallel to the earth B. Both the electric and magnetic fields are vertical C. Both the electric and magnetic fields are horizontal D. The magnetic fields is parallel to the earth

Last Answer : A. The electric field is parallel to the earth

Which quantity is solenoidal in the electromagnetic theory? a) Electric field intensity b) Electric flux density c) Magnetic field intensity d) Magnetic flux density

Description : Which quantity is solenoidal in the electromagnetic theory? a) Electric field intensity b) Electric flux density c) Magnetic field intensit d) Magnetic flux density

Last Answer : d) Magnetic flux density

The capacitance of a material refers to a) Ability of the material to store magnetic field b) Ability of the material to store electromagnetic field c) Ability of the material to store electric field d) Potential between two charged plates

Description : The capacitance of a material refers to a) Ability of the material to store magnetic field b) Ability of the material to store electromagnetic field c) Ability of the material to store electric field d) Potential between two charged plates

Last Answer : c) Ability of the material to store electric field

The windings of the electromagnetic are usually called: a. Magnetic coils b. Field coil c. Electric coil d. simple coil

Description : The windings of the electromagnetic are usually called: a. Magnetic coils b. Field coil c. Electric coil d. simple coil

Last Answer : c. Electric coil

Three forces A, B and C of magnitudes 8 N, 12 N and 20 N acting on a particle are in equilibrim. It can be concluded that a.107 dynes b.B and C act in opposite directions c.one of the forces in non-coplaner d.A and B act at 90? e.one of the forces is non-concurrent

Description : Three forces A, B and C of magnitudes 8 N, 12 N and 20 N acting on a particle are in equilibrim. It can be concluded that a.107 dynes b.B and C act in opposite directions c.one of the forces in non-coplaner d.A and B act at 90? e.one of the forces is non-concurrent

Last Answer : b. B and C act in opposite directions

If vectors A = B + C and magnitudes of A, B and C are 5, 4 and 3 unit respectively, then angle between A and B is

Description : If vectors A = B + C and magnitudes of A, B and C are 5, 4 and 3 unit respectively, then angle between A and B is

Last Answer : If vectors A = B + C and magnitudes of A, B and C are 5, 4 and 3 unit respectively, then angle between A and B ... (C) tan-1 (5/3) (D) cos-1 (3/5)

The process of assigning PCM codes to absolute magnitudes A. Overloading B. All of these C. Quantizing D. Multiplexing

Description : The process of assigning PCM codes to absolute magnitudes A. Overloading B. All of these C. Quantizing D. Multiplexing

Last Answer : C. Quantizing

Casual research is 1. Together primary data to shed light on the real nature of the problem 2. to ascertain certain magnitudes 3. to find out cause and effect relationship 4. to explore the gravity of the situation 5. none of these

Description : Casual research is 1. Together primary data to shed light on the real nature of the problem 2. to ascertain certain magnitudes 3. to find out cause and effect relationship 4. to explore the gravity of the situation 5. none of these

Last Answer : to find out cause and effect relationship

The main advantage of BODE's plot is that multiplication of magnitudes can be converted into : -

Description : The main advantage of BODE's plot is that multiplication of magnitudes can be converted into : - a) addition b) subtraction c) division d) none of the above

Last Answer : The main advantage of BODE's plot is that multiplication of magnitudes can be converted into : -  addition

In a certain three -wire Y -connected generator, the phase voltages are 2 kV. The magnitudes of the line...

Description : In a certain three -wire Y -connected generator, the phase voltages are 2 kV. The magnitudes of the line voltages will be: A. 2,000 V B. 6,000 V C. 666 V D. 3,464 V

Last Answer : In a certain three -wire Y -connected generator, the phase voltages are 2 kV. The magnitudes of the line voltages will be: 3,464 V

Ondometer is a - (1) Measuring instrument for distance covered by motor wheels (2) Measuring instrument for frequency of electromagnetic waves (3) Device for measuring sound intensity (4) Measuring instrument for electric power

Description : Ondometer is a - (1) Measuring instrument for distance covered by motor wheels (2) Measuring instrument for frequency of electromagnetic waves (3) Device for measuring sound intensity (4) Measuring instrument for electric power

Last Answer : (2) Measuring instrument for frequency of electromagnetic waves

Radio waves, microwaves, infra-red spectrum, ultraviolet rays, X-rays and gamma rays are classified as ______. (1) light waves (2) electromagnetic waves (3) electric waves (4) magnetic waves

Description : Radio waves, microwaves, infra-red spectrum, ultraviolet rays, X-rays and gamma rays are classified as ______. (1) light waves (2) electromagnetic waves (3) electric waves (4) magnetic waves

Last Answer : (2) electromagnetic waves Explanation: Electromagnetic radiation is the radiant energy released by certain electromagnetic processes. It consists of electromagnetic waves which are synchronized oscillations of electric and magnetic fields that propagate at the speed of light through a vacuum.

When a bar magnet is cut into two equal halves, the pole strength of each piece (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Description : When a bar magnet is cut into two equal halves, the pole strength of each piece (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Last Answer : (4) remains the same Explanation: The poles remains same whether the magnet is cut into two equal half or more and also pole strength remains same but magnetic moment reduces due to decrease in the length of ... is called north pole (N-poled of the magnet and the other end the south pole (S-pole).

When a bar magnet is cut into two equal halves, the pole strength of each piece – (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Description : When a bar magnet is cut into two equal halves, the pole strength of each piece – (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Last Answer : remains the same

Unraveling an electromagnetic givesA. stronger field B. weaker field C. moderate field D. wider field

Description : Unraveling an electromagnetic givesA. stronger field B. weaker field C. moderate field D. wider field

Last Answer : weaker field

Electric field strength on a dust particle having charge equal to 8 × 10- 19 when plates are separated by distance of 2 cm and have a potential difference of 5 kV is A. 2.0 × 10-13 NB. 3 NC. 5 ND. 20 N

Description : Electric field strength on a dust particle having charge equal to 8 × 10- 19 when plates are separated by distance of 2 cm and have a potential difference of 5 kV is A. 2.0 × 10-13 N B. 3 N C. 5 N D. 20 N

Last Answer : 2.0 × 10-13 N