Phet Exploration: Magnets, Transformers, and Generators
... Hint: Go back to part 2, with the Pickup Coil, and describe what created a voltage in the coil. c) Can you still get the light to work somehow if you use a battery? 5. Generator a) Turn on the water to get the generator to work. What combination of variable settings gives the greatest amount of ligh ...
... Hint: Go back to part 2, with the Pickup Coil, and describe what created a voltage in the coil. c) Can you still get the light to work somehow if you use a battery? 5. Generator a) Turn on the water to get the generator to work. What combination of variable settings gives the greatest amount of ligh ...
r - PolyU EIE
... outer conductors of radii b and a separated by a nonmagnetic medium of permeability εo. Find the inductance per unit length of the cable. Solution: Let the inner conductor carries a current I. Apply Ampere’s law to a closed path of radius r where the magnetic field magnitude is B(r). ...
... outer conductors of radii b and a separated by a nonmagnetic medium of permeability εo. Find the inductance per unit length of the cable. Solution: Let the inner conductor carries a current I. Apply Ampere’s law to a closed path of radius r where the magnetic field magnitude is B(r). ...
Homework Problem Set 7 Homework due by 5:00 pm on Thursday
... Partial credit may be given even if the final answer is incorrect so please show all work! Question 1 (1 point) What is Lenz’s Law? To which basic principle of physics is it most closely related? 1) Len’s law = The induced current in a loop is in the direction that creates a magnetic field that oppo ...
... Partial credit may be given even if the final answer is incorrect so please show all work! Question 1 (1 point) What is Lenz’s Law? To which basic principle of physics is it most closely related? 1) Len’s law = The induced current in a loop is in the direction that creates a magnetic field that oppo ...
Electric Motors
... some rocks were attracted to one another. One of the earlier uses of magnets was in China in the early 11th century in compasses – the needle was made from magnesia, which acted as a magnet that automatically oriented itself towards the North Pole. This happens because the Earth has a magnetic field ...
... some rocks were attracted to one another. One of the earlier uses of magnets was in China in the early 11th century in compasses – the needle was made from magnesia, which acted as a magnet that automatically oriented itself towards the North Pole. This happens because the Earth has a magnetic field ...
Chapter 23: Electricity and Magnetism
... placed a compass needle near a wire through which he could make electric current flow. When the switch was closed, the compass needle moved just as if the wire were a magnet. ...
... placed a compass needle near a wire through which he could make electric current flow. When the switch was closed, the compass needle moved just as if the wire were a magnet. ...
di/dt - s3.amazonaws.com
... and oriented in the horizontal xy-plane is located in a region of uniform magnetic field. A magnetic field with a magnitude of 1.5 T is directed along the positive z-direction, which is upward. a) If the loop is removed from the field region in a time interval of 2.010-3 s, find the average emf tha ...
... and oriented in the horizontal xy-plane is located in a region of uniform magnetic field. A magnetic field with a magnitude of 1.5 T is directed along the positive z-direction, which is upward. a) If the loop is removed from the field region in a time interval of 2.010-3 s, find the average emf tha ...
BEX – Basic Electricity
... Consists of heavy loops of insulated copper wire Wraps around (and insulated from) a laminated iron core ...
... Consists of heavy loops of insulated copper wire Wraps around (and insulated from) a laminated iron core ...
magnetically coupled circuit
... When two loops with or without contacts between them affect each other through the magnetic field generated by one of them, it called magnetically coupled. Example: transformer An electrical device designed on the basis of the concept of magnetic coupling. Used magnetically coupled coils to tr ...
... When two loops with or without contacts between them affect each other through the magnetic field generated by one of them, it called magnetically coupled. Example: transformer An electrical device designed on the basis of the concept of magnetic coupling. Used magnetically coupled coils to tr ...
CirCuits
... They give off light and heat Brightness increases as current increases Since energy is lost as light and heat more voltage is required to have the same current As current increases, resistance increases because the light bulb heats up ...
... They give off light and heat Brightness increases as current increases Since energy is lost as light and heat more voltage is required to have the same current As current increases, resistance increases because the light bulb heats up ...
magnetostatic (cont`d)
... The toroidal-type cuff probe has two oppositely wound windings on each half of the core. The magnetic flux thus leaves the top of both sides, flows down in the center of the cuff, enters the base of the toroid and flows up through both sides. The electrodes are mounted at the center of the both side ...
... The toroidal-type cuff probe has two oppositely wound windings on each half of the core. The magnetic flux thus leaves the top of both sides, flows down in the center of the cuff, enters the base of the toroid and flows up through both sides. The electrodes are mounted at the center of the both side ...
Document
... B) Are the directions of the field lines in the core consistent with the Right Hand Rule? C) Are the North and South Poles correctly ...
... B) Are the directions of the field lines in the core consistent with the Right Hand Rule? C) Are the North and South Poles correctly ...
Coilgun
A coilgun (or Gauss rifle, in reference to Carl Friedrich Gauss, who formulated mathematical descriptions of the magnetic effect used by magnetic accelerators) is a type of projectile accelerator consisting of one or more coils used as electromagnets in the configuration of a linear motor that accelerate a ferromagnetic or conducting projectile to high velocity. In almost all coilgun configurations, the coils and the gun barrel are arranged on a common axis.Coilguns generally consist of one or more coils arranged along a barrel, so the path of the accelerating projectile lies along the central axis of the coils. The coils are switched on and off in a precisely timed sequence, causing the projectile to be accelerated quickly along the barrel via magnetic forces. Coilguns are distinct from railguns, as the direction of acceleration in a railgun is at right angles to the central axis of the current loop formed by the conducting rails. In addition, railguns usually require the use of sliding contacts to pass a large current through the projectile or sabot but coilguns do not necessarily require sliding contacts. Whilst some simple coilgun concepts can use ferromagnetic projectiles or even permanent magnet projectiles, most designs for high velocities actually incorporate a coupled coil as part of the projectile.