Electric Potential
... Electromagnetic induction: The process by which current is generated by moving a conductor through a magnetic field or a magnetic field through a conductor. Electromotive Force: When a wire moves through a magnetic field, a force is exerted on these charges causing them to flow as current. Magnetic ...
... Electromagnetic induction: The process by which current is generated by moving a conductor through a magnetic field or a magnetic field through a conductor. Electromotive Force: When a wire moves through a magnetic field, a force is exerted on these charges causing them to flow as current. Magnetic ...
Lecture 16
... This induces an emf and a current in the external circuit The ends of the loop are connected to slip rings that rotate with the loop Connections to the external circuit are made by stationary brushes in contact with the ...
... This induces an emf and a current in the external circuit The ends of the loop are connected to slip rings that rotate with the loop Connections to the external circuit are made by stationary brushes in contact with the ...
TAP 109- 4: Using non-ohmic behaviour
... school physics technician is worried that the students may damage the milliammeters which they have been given to use in a circuit with a 68 resistor. These meters have a full scale deflection of 20 mA; they have a resistance of 25 , and similar characteristics to those in the graph above. The te ...
... school physics technician is worried that the students may damage the milliammeters which they have been given to use in a circuit with a 68 resistor. These meters have a full scale deflection of 20 mA; they have a resistance of 25 , and similar characteristics to those in the graph above. The te ...
Electromagnetic Induction
... to be a separate closed circuit from the first one. Turn on the generator and record the readings from both voltmeters. Increase the output from the generator and make another recording. Exchange the two coils and repeat what they did in last two steps. Remove the iron bar and record the rea ...
... to be a separate closed circuit from the first one. Turn on the generator and record the readings from both voltmeters. Increase the output from the generator and make another recording. Exchange the two coils and repeat what they did in last two steps. Remove the iron bar and record the rea ...
Passive circuit elements
... • Switches and transistors (MOSFETs, BJTs) • We will present only switches here – MOSFETs and BJTs will be introduced in a later lecture ...
... • Switches and transistors (MOSFETs, BJTs) • We will present only switches here – MOSFETs and BJTs will be introduced in a later lecture ...
magnetic field - bba-npreiser
... Back to Faraday’s two coils of wire • In Faraday’s experiment, the current (moving charge) produces a magnetic field. • When the current is turned off, the magnetic field changes and a current is induced in the other coil. • The changing magnetic field brings about an induced current. • In the expe ...
... Back to Faraday’s two coils of wire • In Faraday’s experiment, the current (moving charge) produces a magnetic field. • When the current is turned off, the magnetic field changes and a current is induced in the other coil. • The changing magnetic field brings about an induced current. • In the expe ...
Super Conductivity 1
... temperatures not too far below the nominal superconducting transition when an electrical current is applied in conjunction with a strong magnetic field, which may be caused by the electrical current. This is due to the motion of vortices in the electronic superfluid, which dissipates some of the ene ...
... temperatures not too far below the nominal superconducting transition when an electrical current is applied in conjunction with a strong magnetic field, which may be caused by the electrical current. This is due to the motion of vortices in the electronic superfluid, which dissipates some of the ene ...
6. Magnets and Motors
... 1. Wrap a piece of paper around the nail and tape in place. 2. Leaving a foot or so of wire free, coil an insulated wire around the length of the nail. 3. Strip the insulation off the ends of the wires. When the wires are attached to positive and negative terminals of a battery (dry cell), the elect ...
... 1. Wrap a piece of paper around the nail and tape in place. 2. Leaving a foot or so of wire free, coil an insulated wire around the length of the nail. 3. Strip the insulation off the ends of the wires. When the wires are attached to positive and negative terminals of a battery (dry cell), the elect ...
Physics of Relativistic Jets
... 1. Equilibrium regime: signal crossing time is less than the expansion time (strong ...
... 1. Equilibrium regime: signal crossing time is less than the expansion time (strong ...
Elec467 Power Machines & Transformers
... sinusoidal fashion from zero when moving horizontally to maximum Φ. Φ = Φmax sin(wt) The rate of rotation is w in radians ...
... sinusoidal fashion from zero when moving horizontally to maximum Φ. Φ = Φmax sin(wt) The rate of rotation is w in radians ...
Fluid flow analogy
... 7-2 The natural response of an RC circuit • An RC circuit is analogous to an RL circuit • The switch has been in the position for a long time such that all the elements in the circuit reach a steady-state condition . • A source voltage exists between the terminals. • Circuit after switching is show ...
... 7-2 The natural response of an RC circuit • An RC circuit is analogous to an RL circuit • The switch has been in the position for a long time such that all the elements in the circuit reach a steady-state condition . • A source voltage exists between the terminals. • Circuit after switching is show ...
Set 2
... A given logic gate gives high state of output when any one of the input is at high state. Identify this gate and give its logic symbol. ...
... A given logic gate gives high state of output when any one of the input is at high state. Identify this gate and give its logic symbol. ...
BD0040
... Increasing the current through the solenoid. A solenoid with soft iron core which can be magnetized by passing a current through the coil is called an electromagnet. The soft iron core acts as temporary magnet and does not retain its magnetism after the current is switched off. Thus this is a type ...
... Increasing the current through the solenoid. A solenoid with soft iron core which can be magnetized by passing a current through the coil is called an electromagnet. The soft iron core acts as temporary magnet and does not retain its magnetism after the current is switched off. Thus this is a type ...
electric motor
... Electromagnetism 〉What happens to a compass near a wire that is carrying a current? 〉When the wire carries a strong, steady current, all of the compass needles move to align with the magnetic field created by the electric current. • Hans Christian Oersted found that magnetism is produced by moving e ...
... Electromagnetism 〉What happens to a compass near a wire that is carrying a current? 〉When the wire carries a strong, steady current, all of the compass needles move to align with the magnetic field created by the electric current. • Hans Christian Oersted found that magnetism is produced by moving e ...
Announcements
... Simultaneity is out the window. Observers in different reference frames may also measure different time intervals between a pair of events. Consider a boxcar moving to the right with a velocity v. Observer O’ shines a laser and observes it reflecting from a mirror on the ceiling. She’s timing this a ...
... Simultaneity is out the window. Observers in different reference frames may also measure different time intervals between a pair of events. Consider a boxcar moving to the right with a velocity v. Observer O’ shines a laser and observes it reflecting from a mirror on the ceiling. She’s timing this a ...
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.