P3 Ass 2 Higher Ms - Durrington High School
... Level 2 (3–4 marks) There is a description of the construction of a transformer and a correct statement of the effect of one type of transformer on the input p.d. Level 3 (5–6 marks) There is a clear description of the construction of a transformer and there is a correct description of how transform ...
... Level 2 (3–4 marks) There is a description of the construction of a transformer and a correct statement of the effect of one type of transformer on the input p.d. Level 3 (5–6 marks) There is a clear description of the construction of a transformer and there is a correct description of how transform ...
ph213_overhead_ch30
... • Changes in B, A and/or f change the magnetic flux Faraday’s Law: changing magnetic flux induces electromotive force (& thus current) in a closed wire loop ...
... • Changes in B, A and/or f change the magnetic flux Faraday’s Law: changing magnetic flux induces electromotive force (& thus current) in a closed wire loop ...
AC circuits
... Motors are essentially generators run in reverse. Motors convert electrical energy to mechanical energy. A current is supplied to the loop by an external source and the magnetic force on the current carrying loop causes it to rotate. AC circuits In an AC circuit, the emf and currently are contin ...
... Motors are essentially generators run in reverse. Motors convert electrical energy to mechanical energy. A current is supplied to the loop by an external source and the magnetic force on the current carrying loop causes it to rotate. AC circuits In an AC circuit, the emf and currently are contin ...
Define and Explain Electromagnetic Induction
... Note that this induced emf is indistinguishable from that of a battery and that the current is still just the rate of the motion of charges; therefore, Ohm's law and other relationships for currents in wires are still valid. Lenz's law The direction of the induced current can be found from Lenz's l ...
... Note that this induced emf is indistinguishable from that of a battery and that the current is still just the rate of the motion of charges; therefore, Ohm's law and other relationships for currents in wires are still valid. Lenz's law The direction of the induced current can be found from Lenz's l ...
Lesson 2 – Building Electromagnets
... Purpose of Activity: To give the students experience with very basic circuit construction, and to demonstrate the close relationship between electricity and magnetism. Experimental Observations: Students will explore the interacting effects of electricity and magnetism. (This is not an experiment wi ...
... Purpose of Activity: To give the students experience with very basic circuit construction, and to demonstrate the close relationship between electricity and magnetism. Experimental Observations: Students will explore the interacting effects of electricity and magnetism. (This is not an experiment wi ...
induced magnetic field
... right way to again recreate the magnetic field, and so on. This is an electromagnetic wave (a light wave). ...
... right way to again recreate the magnetic field, and so on. This is an electromagnetic wave (a light wave). ...
The Charge to Mass Ratio of the Electron
... Equation (6) is the working equation for the apparatus used. The quantity within the first set of parentheses is constant for any given pair of Helmholtz coils. (For the Helmholtz coils with which we are working, the number of turns of wire N = 130 and the mean radius of the coils a is about 0.15 me ...
... Equation (6) is the working equation for the apparatus used. The quantity within the first set of parentheses is constant for any given pair of Helmholtz coils. (For the Helmholtz coils with which we are working, the number of turns of wire N = 130 and the mean radius of the coils a is about 0.15 me ...
Chapter 7: Magnetism and Its Uses
... magnetic force is strongest All magnets have a north and south pole Magnetic field lines start at the north pole and end on the south pole Two magnets will either attract or repel each other • Like poles will repel, unlike poles will attract ...
... magnetic force is strongest All magnets have a north and south pole Magnetic field lines start at the north pole and end on the south pole Two magnets will either attract or repel each other • Like poles will repel, unlike poles will attract ...
Chap 6
... a) Replace the original capacitors with an equivalent capacitor and find υo(t) for t ≥ 0. b) Find υ1(t) for t ≥ 0. c) Find υ2(t) for t ≥ 0. d) How much energy is delivered to the black box in the time interval 0 ≤ t ≤ ∞? e) How much energy was initially stored in the series capacitors? f) How much e ...
... a) Replace the original capacitors with an equivalent capacitor and find υo(t) for t ≥ 0. b) Find υ1(t) for t ≥ 0. c) Find υ2(t) for t ≥ 0. d) How much energy is delivered to the black box in the time interval 0 ≤ t ≤ ∞? e) How much energy was initially stored in the series capacitors? f) How much e ...
e/m Experiment - sestechno.com
... on Thomson’s method. The e/m-tube is bulb-like and contains a filament, a cathode, a grid, a pair of deflection plates and an anode. The tube is filled with helium at a very low pressure. Some of the electrons emitted by the cathode collide with helium atoms which get excited and radiate visible lig ...
... on Thomson’s method. The e/m-tube is bulb-like and contains a filament, a cathode, a grid, a pair of deflection plates and an anode. The tube is filled with helium at a very low pressure. Some of the electrons emitted by the cathode collide with helium atoms which get excited and radiate visible lig ...
Four Derivations of Motional EMF
... battery. Equating the right-hand sides of Eqs. (3) and (4) reproduces Eq. (1) but now treats the actual motion of the charge carriers. On the other hand, this derivation does not explain the energetics of the process and seems to imply that the gain in potential energy was sourced by the magnetic fo ...
... battery. Equating the right-hand sides of Eqs. (3) and (4) reproduces Eq. (1) but now treats the actual motion of the charge carriers. On the other hand, this derivation does not explain the energetics of the process and seems to imply that the gain in potential energy was sourced by the magnetic fo ...
Pulse operation of film capacitors
... Pulse operation of film capacitors When capacitors are subjected to waveforms that contain fast rising (or falling) pulses care needs to be taken to prevent the capacitors from becoming damaged from these waveforms. The peak currents generated from these waveforms place a large amount of stress on t ...
... Pulse operation of film capacitors When capacitors are subjected to waveforms that contain fast rising (or falling) pulses care needs to be taken to prevent the capacitors from becoming damaged from these waveforms. The peak currents generated from these waveforms place a large amount of stress on t ...
l.sc100 vasco gcet mock test
... medium of absolute refractive index µ. The ratio of wavelength of the incident and refracted wave is a) µ : 1 b) 1 : µ c) µ2 : 1 d) 1 : 1 34. An object is placed at a distance of 40 cm in front of a concave mirror of focal length 20 cm. the image produced is a) Real and erect b) Virtual and inverted ...
... medium of absolute refractive index µ. The ratio of wavelength of the incident and refracted wave is a) µ : 1 b) 1 : µ c) µ2 : 1 d) 1 : 1 34. An object is placed at a distance of 40 cm in front of a concave mirror of focal length 20 cm. the image produced is a) Real and erect b) Virtual and inverted ...
Introduction For Coil gun
... conductive projectile. Eddy currents always act against the applied magnetic field, reducing the absorbed kinetic energy. Eddy currents are an important effect; a much earlier coilgun found a 24% reduction in velocity due to eddy currents in a brass firing tube. Since then, we have only used non-con ...
... conductive projectile. Eddy currents always act against the applied magnetic field, reducing the absorbed kinetic energy. Eddy currents are an important effect; a much earlier coilgun found a 24% reduction in velocity due to eddy currents in a brass firing tube. Since then, we have only used non-con ...
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.