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 : The magnetic materials follow which law? a) Faraday’s law b) Ampere law c) Lenz law d) Curie Weiss law
Last Answer : d) Curie Weiss law
Description : Gauss' law of electricity, Gauss' law of magnetism, Faraday's law of induction, and Amperes' law form the basic equations of electromagnetism. This combination is collectively known as: w) Coulomb's equations x) Volta's equations y) Fermi's equations z) Maxwell's equations
Last Answer : ANSWER: Z -- MAXWELL'S EQUATIONS
Description : Which one of the following laws will not contribute to the Maxwell’s equations? a) Gauss law b) Faraday law c) Ampere law d) Curie Weiss law
Description : Electromagnetic radiation: (A) Produces a time varying magnetic field and vice versa (B) Once generated, remains self-propagating (C) Is capable to travel across space (D) All of these
Last Answer : Answer: Option D
Description : With Gauss law as reference which of the following law can be derived? a) Ampere law b) Faraday’s law c) Coulomb’s law d) Ohm’s law
Last Answer : c) Coulomb’s law
Description : Biot Savart law in magnetic field is analogous to which law in electric field? a) Gauss law b) Faraday law c) Coulomb’s law d) Ampere law
Description : The law that relates the electric field at the surface of a region to the amount of charge inside the region is called: w) Coulomb's Law x) Faraday's Law y) Gauss' Law z) Biot-Savart Law
Last Answer : ANSWER: Y -- GAUSS' LAW
Description : Whose principle or law states that each point on a wave front may be considered a new wave source? Is it: A. Snell's Law B. Huygens’s Principle C. Young's Law D. Hertz's Law.
Last Answer : B. Huygens’s Principle
Description : Whose principle or law states that each point on a wavefront may be considered a new wave source? Is it: w) Snell's Law x) Huygen's Principle y) Young's Law z) Hertz's Law.
Last Answer : ANSWER: X -- HUYGEN'S PRINCIPLE
Description : State Faraday’s first law of electro-magnetic induction.
Last Answer : Whenever a magnetic field linked with a conductor changes, an induced e.m.f is generated in the conductor.
Description : Which one of the following laws best describes the operation of an electric generator? w) Ampere's Law x) Gauss' Law y) Ohm's Law for Conductors z) Faraday's Law of Induction
Last Answer : ANSWER: Z -- FARADAY'S LAW OF INDUCTION
Description : Induced electric currents can be explained using which of the following laws? w) Gauss's Law x) Faraday's Law y) Ohm's Law z) Ampere's Law
Last Answer : ANSWER: X -- FARADAY'S LAW
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 : A uniform conducting ring of mass `pi` kg and radius 1 m is kept on smooth horizontal table. A uniform but time varying magnetic field `B = (hat (i) +
Last Answer : A uniform conducting ring of mass `pi` kg and radius 1 m is kept on smooth horizontal table. A uniform but time ... `(2)/(3pi)kJ` D. `(1)/(pi)kJ`
Last Answer : A uniform conducting ring of mass `pi` kg and radius 1 m is kept on smooth horizontal table. A uniform but time ... `(5)/(pi)s` D. `(25)/(pi)s`
Description : A current of `10` ampere is flowing in a wire of length `1.5m`. A force of `15 N` acts on it when it is placed in a uniform magnetic field of `2` tesl
Last Answer : A current of `10` ampere is flowing in a wire of length `1.5m`. A force of `15 N` acts on it when it is placed ... `45^(@)` C. `60^(@)` D. `90^(@)`
Description : Moving electric charge produces - (1) magnetic field (2) sound waves (3) light rays (4) heat waves
Last Answer : (1) magnetic field Explanation: An electric charge always produces an electric field, regardless of speed, and a moving charge generates a magnetic field. An electric current passing through a conductor produces a magnetic field because it has many charges in motion.
Description : Electric current produces magnetic field was suggested by: a. Faraday b. Lenz c. Ohm d. Oerested
Last Answer : c. Ohm
Description : Moving electric charge produces : (1) magnetic field (2) sound waves (3) light rays (4) heat waves
Last Answer : magnetic field
Description : The time varying electric field E is conservative. State True/False. a) True b) False
Last Answer : b) False
Description : The propeller shaft speed in a turbo-electric, synchronous, propulsion drive motor is changed by varying the __________. A. turbine speed B. number of motor poles C. field strength of the generator D. field strength of the motor
Last Answer : Answer: A
Description : In an AC synchronous motor electric propulsion plant, propeller speed is controlled by varying the _____________. A. prime mover speed B. electric coupling field strength C. number of energized main motor poles D. propulsion generator field strength
Description : Pick out the wrong statement. (A) The X-rays cannot be deflected by electric field unlike cathode rays (B) The intensity of X-rays can be measured by ionisation current produced due to the ... the anode-cathode voltage (D) Crystal structure of a material can be studied by an electron microscope
Last Answer : (C) The quality of X-rays can be controlled by varying the anode-cathode voltage
Description : A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero
Last Answer : ANSWER: W -- CONSTANT
Description : "At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero". This follows from the (A) Third law of thermodynamics (B) Second law of thermodynamics (C) Nernst heat theorem (D) Maxwell's relations
Last Answer : (A) Third law of thermodynamics
Description : The law that states “When visible light of high frequency electromagnetic radiation illuminates a metallic surface, electrons are emitted” is known as ____________. ∙ A. Einstein law of photon ∙ B. Marconi’s law ∙ C. Maxwell’s law ∙ D. Plank’s law
Last Answer : D. Plank’s law
Description : What is the unit of electric field strength? A. Watt/meter B. Ohms/meter C. Ampere/meter D. Watt/meter2 E. No answer
Last Answer : E. No answer
Description : For structural analysis of forces, the method refers to (A) Moment-area-theorem (B) Three-moment equation (C) Maxwell's reciprocal theorem (D) None of these
Last Answer : (A) Moment-area-theorem
Description : For structural analysis, Maxwell's reciprocal theorem can be applied to: (A) Plastic structures (B) Elastic structures (C) Symmetrical structures (D) All the above
Last Answer : (B) Elastic structures
Description : State the faraday’s laws of electro magnetic induction.
Last Answer : In 1831 Faraday discovered the production of electric current in electric conductor by converting magnetism. Faraday has mentioned two laws known as faraday's laws of electro magnetic induction. First ... conductor is directly proportional to the rate of change of flux linked with that conductor.
Description : The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as: (1) Avogadro's law (2) Rault's law (3) Ohms law (4) Faraday's law
Last Answer : (3) Ohms law Explanation: According to Ohm's Law, the potential difference (V) between two terminals of a current-carrying conductor is directly proportional to the current (I), flowing through it. -For any Study materialContact WhatsApp: 8337932441 Join Telegram- Click here
Description : The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as: (1) Avogadro’s law (2) Rault’s law (3) Ohms law (4) Faraday’s law
Last Answer : Ohms law
Description : The scientific principle involved in a laser is (a) Newton’s laws of motion (b) Faraday’s laws of induction (c) Motion of a charges particle in an electromagnetic field (d) Amplification by population inversion
Last Answer : Ans:(d)
Description : A superconductor, during its transition to the superconducting state, expels a magnetic field. After which German physicist is this phenomenon which causes a magnet to levitate above a superconductor named?
Last Answer : Walther Meissner.
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
Description : Which physical phenomenon or principle is most often applied in the search for petroleum reservoirs? w) gravitational attraction x) magnetic field distortions y) natural radioactive decay of minerals z) acoustic wave transmission and reflection
Description : (a) State and explain Kohlrausch law. (b) How much electricity in terms of Faradays is required to produce 20 g of calcium from molten CaCl2? -Chemistry
Last Answer : a) Corrosion is an electrochemical phenomenon. At a particular spot of iron j oxidation it takes place and the spot behaves j as anode and the reaction will be: i At anode : 2Fe(s) → 2Fe2+ + 4e- Electrons ... Ca i.e. 40 g of Ca requires electricity = 2F ∴ 20 g of Ca will require electricity = 1F
Description : What is Faraday's first law of electrolysis ?
Last Answer : First formula: In the process of electrolysis, the amount of material deposited on the electrode is proportional to the amount of electricity flowing through the solution or electrolyte.
Description : The law that finds application in electrolysis is: a) Faraday's law b) Coulomb's law c) Ohm's law d) Lenz's law
Last Answer : Ans: A
Description : Any small element of space in the path of a wave may be considered as a source of secondary wavelet. A. De Morgan’s Principle B. Faraday’s Law C. Huygen’s Principle D. Fresnel’s Law of optics
Last Answer : C. Huygen’s Principle
Description : State Faraday’s second law of electrolysis.
Last Answer : “The masses of different substances liberated by the same quantity of electricity are proportional to their chemical equivalents”.
Description : State Faraday’s first law of electrolysis.
Last Answer : “The mass of substance deposited or collected at either electrode during electrolysis is proportional to the current and to the time”.
Description : State Faraday's second law of electromagnetic induction.
Last Answer : The Magnitude of the induced e.m.f is directly proportional to the rate of change of magnetic field linking the conductor.
Description : The Faraday’s law states about which type of EMF? a) Transformer EMF b) Back EMF c) Generator EMF d) Secondary EMF
Last Answer : a) Transformer EMF
Description : Find the Maxwell equation derived from Faraday’s law. a) Div(H) = J b) Div(D) = I c) Curl(E) = -dB/dt d) Curl(B) = -dH/dt
Last Answer : c) Curl(E) = -dB/dt
Description : If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the ... (b) Ohm's law (c) Kirchhoffs law (d) Faraday's law (e) none of the above
Last Answer : (a) Kelvin's law
Description : “The direction of induced current is always so as to oppose the change which causes the Current” is the statement of: a. Faraday’s law b. Lenz’s Law c. Ohm’s Law d. Kirchoff’s rule.
Last Answer : c. Ohm’s Law
Description : The Principle of an alternating current generator is based on: a. Coulomb’s law b. Ampere’s law c. Faraday’s law d. Lenz’s law
Last Answer : a. Coulomb’s law
Description : State Faraday's first and second law of electromagnetic induction.
Last Answer : i)Faraday's First Law: Whenever a conductor cuts the magnetic lines of force or is cut by the magnetic lines of force or flux linking with conductor changes, an emf is induced in the conductor. ... Law: The magnitude of induced emf is directly proportional to the rate of change of flux.