What is electromagnetic force ?

1 Answer

Answer :

The force exerted by two charged objects or particles on each other due to their charge is called electromagnetic force. These forces can be either attractive or repulsive.

Related questions

Description : What is an electromagnetic force ?

Last Answer : Electromagnetic force: The force of attraction or repulsion applied to each other by two injured particles due to their charge is called electromagnetic force. These forces can be both attractive and repulsive. ... force , spring force, etc. are caused by the electric ball of the injured particle.

Description : The Grand Unified Theory of the forces of nature combines three of the four forces. Which force is NOT included? w) gravitational x) electromagnetic y) weak nuclear z) strong nuclear

Last Answer : ANSWER: W -- GRAVITATIONAL

Description : What is electromagnetic force or electromagnetic force ?

Last Answer : : Many of us have never combed our hair with a comb to attract a piece of paper or to attract another magnet with a magnet. Although electric and magnetic forces seem to be different kinds of forces, ... mass, still a little bit of electricity of your comb is all over that huge earth. Loses gravity.

Description : What is the English meaning of electromagnetic force ?

Last Answer : The English electromagnetic force.

Last Answer : The force exerted by an electromagnetic field on an object is called electromagnetic force.

Description : If a charged particle at rest experiences no electromagnetic force,

Last Answer : If a charged particle at rest experiences no electromagnetic force, A. electron field must be zero B. ... electron field must be zero D. None of above

Description : What scientist unified the electromagnetic and weak force?

Last Answer : Louise Lumbang

Description : Bosons which carry electromagnetic force are?

Last Answer : Photons

Description : Dr. Abdus Salam of Pakistan was one of the contributors of the unification of -----? A. Electromagnetic force and gravitational force B. Electromagnetic force and weak nuclear force (Answer)

Last Answer : B. Electromagnetic force and weak nuclear force (Answer)

Description : Find the force that exists in an electromagnetic wave. a) Electrostatic force b) Magnetostatic force c) Lorentz force d) Electromotive force

Last Answer : c) Lorentz force

Description : Find the force experienced by an electromagnetic wave in a conductor? a) Electrostatic force b) Magneto static force c) Electro motive force d) Lorentz force

Last Answer : d) Lorentz force

Description : According to Faraday’s law, EMF stands for a) Electromagnetic field b) Electromagnetic force c) Electromagnetic friction d) Electromotive force

Last Answer : d) Electromotive force

Description : Weak nucleo ball How many times weaker than electromagnetic ball ?

Last Answer : Weak nuclear force is 10 ^ 10 times weaker than electromagnetic ball.

Description : What is electromagnetic induction ?

Last Answer : Electromagnetic induction is a process by which , in effect, a "conductive" voltage is created. This process occurs when a variable magnetic field is placed between a conductor in a ... the relative motion between the magnetic field line and the conductor that creates the electromagnetic induction.

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

Description : The working of optical is based on which of electromagnetic waves?

Last Answer : – Total internal reflection

Description : Which pairs of rays is electromagnetic in nature?

Last Answer : – x-rays and gamma rays

Description : When a vehicle passes, TV reception gets distorted. This is because – (1) metal reflects radiowaves (2) spark plug creates electromagnetic disturbances (3) vehicle pollution affects the performance of the TV components (4) modern vehicles use electro ignition system

Last Answer : (2) spark plug creates electromagnetic disturbances Explanation: This is caused due to the interference caused by the electromagnetic waves generated by a passing vehicle. These waves were within the same ... in which two waves superimpose to form a resultant wave of greater or lower amplitude.

Description : Indicate the correct arrangement for electromagnetic radiation in order of their increasing wavelength. (1) Microwave, infrared, visible. X-rays (2) X-rays, visible, infrared, microwave (3) Visible, infrared, microwave, X-rays (4) X-rays, infrared, visible, microwave

Last Answer : (4) X-rays, infrared, visible, microwave Explanation: The Electromagnetic spectrum in order of decreasing energy, thus increasing wavelength : Gamma Rays-wavelength: 0.01 nm ; X-rays -1 nm ; Ultra-violet Rays-0.1 ... -10 m ; and Very High Frequency (VHF) and Ultra High Frequency (UHF): 10 m-10 cm.

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

Description : Beta rays emitted by a radioactive material are – (1) The electrons orbiting around the nucleus (2) Charged particles emitted by nucleus (3) Neutral particles (4) Electromagnetic radiations

Last Answer : (2) Charged particles emitted by nucleus Explanation: A beta ray is a high-energy, highspeed electron (negatively charged) or positron (positively charged) emitted in the radioactive decay of an atomic nucleus, such as a potassium40 nucleus, in the process of beta decay.

Description : On which of the following techniques photo state machine works? Magnetic Image—Making Thermal Image—Making Electrostatic Image—Making Electromagnetic Image Making

Last Answer : (3) Electrostatic Image- Making Explanation: All Electrostatic Copiers work under the premise that a charge of electricity is placed on an Image Drum which has the ability to retain. the electric ... ) is a machine that makes paper copies of documents and other visual images quickly and cheaply.

Description : In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie? (1) Visible (2) Infrared (3) Ultraviolet (4) X-ray

Last Answer : (3) Ultraviolet

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.

Description : X- rays are ______ waves. (1) Longitudinal (2) Transverse (3) Electromagnetic (4) Elastic

Last Answer : (3) Electromagnetic Explanation: X-rays are a form of electromagnetic radiation as are radio waves.

Description : In the remote control of television, electromagnetic waves used are – (1) ultraviolet (2) microwave (3) radiowave (4) infrared

Last Answer : (4) infrared Explanation: All electromagnetic waves used are infrared.

Description : Which waves cannot be transmitted through vacuum - (1) Light (2) Heat (3) Sound (4) Electromagnetic

Last Answer : (3) Sound Explanation: Sound waves cannot be transmitted through vacuum. It is transmitted by the movement of particles along with the direction of the motion of the sound wave. More generally, sound is a mechanical disturbance which is dependent upon a medium to travel.

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.

Description : Sound waves in air are ______. (1) transverse (2) longitudinal (3) electromagnetic (4) polarised

Last Answer : (2) longitudinal Explanation: Sound can propagate through compressible media such as air, water and solids as longitudinal waves and also as a transverse wave in solids.

Description : Matter waves are – (1) de Broglie waves (2) Electromagnetic waves (3) Transverse waves (4) Longitudinal waves

Last Answer : (1) de Broglie waves Explanation: In mechanics, matter waves or de Broglie waves reflects the wave-particle duality of matter. The de Broglie relations show that the wavelength is inversely proportional to the momentum of a particle and is also called de Broglie wavelength.

Description : The scientist who first sent electromagnetic waves to distant places is – (1) James Clerk Maxwell (2) Heinrich Hertz (3) Thomas Alva Edison (4) John Logie Baird

Last Answer : (3) Thomas Alva Edison Explanation: Radio is the transmission of single through free space by electromagnetic radiation of a frequency significantly below that of visible light, in the radio frequency range, from about 30 kHz to 300 GHz. Those waves are called radio waves.

Description : These waves cannot be trans-mitted through vacuum – (1) Light (2) Sound (3) Heat (4) Electromagnetic

Last Answer : (2) Sound Explanation: Sound is a mechanical wave that is created by vibrating objects and propagated through a medium from one location to another. Because mechanical waves rely on particle interaction ... space that are void of particles. That is, mechanical waves cannot travel through a vacuum.

Description : A photostat machine works on – (1) electromagnetic image making (2) electrostatic image making (3) magnetic image making (4) thermal image making

Last Answer : (2) electrostatic image making Explanation: A photocopier uses electrostatic charge to produce a copy. The original document is placed onto a sheet of glass. An image of this page is projected ... drum which are lit by the projected image lose their electrostatic charge when they start to conduct.

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.

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

Last Answer : weaker field

Description :  Consequence of motor effect isA. electromagnetic induction B. current C. voltage D. e.m.f

Last Answer : electromagnetic induction

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

Description : Weather satellites transmit cloud cover and temperature-humidity profiles back to Earth using images of which combination of the electromagnetic radiation types? w) infra-red and visible light x) ultraviolet and nuclear magnetic y) ultraviolet and infra-red z) ultraviolet and visible light

Last Answer : ANSWER: W -- INFRA-RED AND VISIBLE LIGHT

Description : The region of the electromagnetic spectrum immediately above the frequencies to which the human eye is sensitive is called: w) ir x) ultra-violet y) rf z) gamma ray

Last Answer : ANSWER: X -- ULTRA-VIOLET

Description : State the unit of electromagnetic induction. 

Last Answer : ANSWER: GAUSS OR TESLA

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

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

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

Last Answer : ANSWER: Z -- TRANSVERSE

Description : Name the English physicist who discovered electromagnetic induction?

Last Answer : ANSWER: (MICHAEL) FARADAY

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 

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

Description : The four underlying equations in electromagnetic theory are called: w) Einstein's Equations x) Maxwell's Equations y) Newton's Equations z) Faraday's Law

Last Answer : ANSWER: X -- MAXWELL'S EQUATIONS

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

Last Answer : ANSWER: THE SPEED OF LIGHT or C

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

Description : Beta rays emitted by a radioactive material are (1) The electrons orbiting around the nucleus (2) Charged particles emitted by nucleus (3) Neutral particles (4) Electromagnetic radiations

Last Answer : Charged particles emitted by nucleus