Transformers Safety
... (a) The plug-in transformer for a laptop computer puts out 7.50 V and can supply a maximum current of 2.00 A. What is the maximum input current if the input voltage is 240 V? Assume 100% efficiency. (b) If the actual efficiency is less than 100%, would the input current need to be greater or smaller ...
... (a) The plug-in transformer for a laptop computer puts out 7.50 V and can supply a maximum current of 2.00 A. What is the maximum input current if the input voltage is 240 V? Assume 100% efficiency. (b) If the actual efficiency is less than 100%, would the input current need to be greater or smaller ...
File - Ms. Berenyi`s Classes
... Light 86. What type of wave is EM radiation? Does is need a medium? 87. Describe the relationships between wavelength, frequency, and energy of EM radiation. 88. Describe a use or characteristic of each type of EM radiation. 89. Explain why white and black objects appear those colors. 90. List the p ...
... Light 86. What type of wave is EM radiation? Does is need a medium? 87. Describe the relationships between wavelength, frequency, and energy of EM radiation. 88. Describe a use or characteristic of each type of EM radiation. 89. Explain why white and black objects appear those colors. 90. List the p ...
physics-p5-what-you-should
... across the battery (because the work done on each unit of charge by the battery must equal the work done by it on the circuit components) c. the potential difference is largest across the component with the greatest resistance, because more work is done by the charge moving through a large resistanc ...
... across the battery (because the work done on each unit of charge by the battery must equal the work done by it on the circuit components) c. the potential difference is largest across the component with the greatest resistance, because more work is done by the charge moving through a large resistanc ...
Separate Science PHYSICS
... 6.6 sketch and recognise the magnetic field pattern for a permanent bar magnet and that between two bar magnets 6.7 know how to use two permanent magnets to produce a uniform magnetic field pattern 6.9 describe the construction of electromagnets 6.10 sketch and recognise magnetic field patterns for ...
... 6.6 sketch and recognise the magnetic field pattern for a permanent bar magnet and that between two bar magnets 6.7 know how to use two permanent magnets to produce a uniform magnetic field pattern 6.9 describe the construction of electromagnets 6.10 sketch and recognise magnetic field patterns for ...
5-Motors
... in the previous example. It consists of two metal plates joined together by a coil wrapped around them. Between the two plates is the metal axle, just a metal rod that will be placed on supports to allow movement of the armature. The metal commutator (in this diagram it is the broken green cuff arou ...
... in the previous example. It consists of two metal plates joined together by a coil wrapped around them. Between the two plates is the metal axle, just a metal rod that will be placed on supports to allow movement of the armature. The metal commutator (in this diagram it is the broken green cuff arou ...
Power electronics interfaces initial presentation
... • Several control techniques. The simplest technique is square wave modulation (seen below). •The most widespread control technique is Pulse-Width-Modulation (PWM). ...
... • Several control techniques. The simplest technique is square wave modulation (seen below). •The most widespread control technique is Pulse-Width-Modulation (PWM). ...
Scalar Potential and Conservative Electric Field Within a Loaded
... the final electrical field distribution throughout the coil (1). We also consider the effect of charge distribution and scalar potential in the coil windings: To create rapid current changes in gradient coils, a very strong electromotive force is required to overcome the inductance of the gradient w ...
... the final electrical field distribution throughout the coil (1). We also consider the effect of charge distribution and scalar potential in the coil windings: To create rapid current changes in gradient coils, a very strong electromotive force is required to overcome the inductance of the gradient w ...
G032 - Pulse Electronics
... unipolar, with a unipolar output, which duplicates the wave shape of the sensed current bipolar output, which duplicates the wave shape of the sensed current digital output, which switches when the sensed current exceeds a certain threshold ©2009 All Rights Reserved ...
... unipolar, with a unipolar output, which duplicates the wave shape of the sensed current bipolar output, which duplicates the wave shape of the sensed current digital output, which switches when the sensed current exceeds a certain threshold ©2009 All Rights Reserved ...
615-0335 (10-152) Lenz`s Law Pendulum
... Introduction: What is Lenz’s Law? How does it apply to pendulums? Lenz’s Law gives the direction of the electromotive force caused by electromagnetic induction. Electromagnetic induction is a phenomenon caused when a magnetic field interacts with a conductive material. As the material passes through ...
... Introduction: What is Lenz’s Law? How does it apply to pendulums? Lenz’s Law gives the direction of the electromotive force caused by electromagnetic induction. Electromagnetic induction is a phenomenon caused when a magnetic field interacts with a conductive material. As the material passes through ...
1 - Nuts and Volts
... electrons move in such a way that there is a net current. If all the atoms in a certain region are "pointing" in the same direction, that region will have a magnetic field. Most steels are magnetically like iron, but stainless steel is usually not magnetic. Magnetic iron alloys are said to be ferrom ...
... electrons move in such a way that there is a net current. If all the atoms in a certain region are "pointing" in the same direction, that region will have a magnetic field. Most steels are magnetically like iron, but stainless steel is usually not magnetic. Magnetic iron alloys are said to be ferrom ...
No Slide Title
... – magnetic field flux lines perpendicular to current cause proportional voltage across sheet. – discovered by E.F.Hall in 1879 ...
... – magnetic field flux lines perpendicular to current cause proportional voltage across sheet. – discovered by E.F.Hall in 1879 ...
Maxwell`s equation
... point in space by currents J flowing along other curves in space. It has its experimental roots in Oersted’s great discovery that an electric current produces a magnetic field in the space around it. If another term is added to this equation, it follows that the magnetic field can be produced also i ...
... point in space by currents J flowing along other curves in space. It has its experimental roots in Oersted’s great discovery that an electric current produces a magnetic field in the space around it. If another term is added to this equation, it follows that the magnetic field can be produced also i ...
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.