* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Maxwell`s Equations 1.The concept of displacement current was a
Electrical resistance and conductance wikipedia , lookup
Insulator (electricity) wikipedia , lookup
Electric charge wikipedia , lookup
Friction-plate electromagnetic couplings wikipedia , lookup
Computational electromagnetics wikipedia , lookup
History of electromagnetic theory wikipedia , lookup
Magnetic field wikipedia , lookup
Alternating current wikipedia , lookup
Magnetic monopole wikipedia , lookup
Magnetoreception wikipedia , lookup
Electrostatics wikipedia , lookup
History of electrochemistry wikipedia , lookup
Maxwell's equations wikipedia , lookup
Magnetochemistry wikipedia , lookup
Superconductivity wikipedia , lookup
Hall effect wikipedia , lookup
Multiferroics wikipedia , lookup
Electric current wikipedia , lookup
Electric machine wikipedia , lookup
Scanning SQUID microscope wikipedia , lookup
Magnetohydrodynamics wikipedia , lookup
Electricity wikipedia , lookup
Electromagnetism wikipedia , lookup
Galvanometer wikipedia , lookup
Force between magnets wikipedia , lookup
Eddy current wikipedia , lookup
Electromagnetic field wikipedia , lookup
History of geomagnetism wikipedia , lookup
Superconducting magnet wikipedia , lookup
Electromagnet wikipedia , lookup
Lorentz force wikipedia , lookup
Maxwell’s Equations 1.The concept of displacement current was a major contribution attributed to Ans:c a) Faraday b) Lenz c) Maxwell d) Lorentz 2. If a wire parallel to the base of a horizontal U-shaped wire is pulled back and forth while the circuit is perpendicular to a uniform B-field, the system will be an example of a Ans:B A) AC motor B) AC generator C) DC motor D) DC generator 3. If the North pole of a bar magnet is moved down toward a wire loop on the floor, the current induced in the wire will flow Ans:B A) clockwise B) counterclockwise 4. If the South pole of a bar magnet is moved up away from a wire loop on the floor, the current induced in the wire will flow Ans:B A) clockwise B) counterclockwise 5. Displacement current (ID) is proportional to A) ΦB B) ΦE C) dΦB/dt D) dΦE/dt Ans:D 6. If a thin aluminum plate is swung vertically between the plates of a horseshoe magnet, the swing will not be dramatically slowed if the plate contains a Ans:B A) series of vertical slots B) series of horizontal slots C) solid (no slots) 7.A loop is rotating about the y-axis in a magnetic field B=Bosinωt axWb/m2.The voltage induced in the loop is due to Ans:C A) Motional emf C) A combination of motional and transformer emf B) Transformer emf D) none 8.Maxwell’s Equation describes the interrelationship among electric field,electric charge, magnetic field,and: Ans:D A) Plasmic field B) Electron Pulse c) Tiberium Charge D)None of the above 9.What is electromagnetism ? Ans:B A) A current that repels quasi-metals such as vibranium. B) A field which exerts a force on particles that posses properties of electric charge. C) A field of electrically charge magnets that posses properties of both elements. D) None of the above. 10.A rectangular coil of 100 turns and size 0.1m*0.05m is placed perpendicular to a magnetic field of 0.1T. If the field drops to 0.05T in 0.05s, the magnetic of induced emf is : Ans:B A)0.1 V B)0.5V C) 1V D) 2V 11. A Loop connected to DC supply placed in varying magnetic field with no slip rings or brushes Ans:B A) Rotates B) Oscillates C)Do Not move D)Cannot be determined