Generating Electricity Part 2, and Magnetism
... ___________________________ exit in a pattern surrounding a magnetized substance or permanent magnet itself. These principals are commonly seen our modern day navigation systems which are oriented __________________________________________________________. Magnetic Lines of flux are ________________ ...
... ___________________________ exit in a pattern surrounding a magnetized substance or permanent magnet itself. These principals are commonly seen our modern day navigation systems which are oriented __________________________________________________________. Magnetic Lines of flux are ________________ ...
Magnetism
... behaves as if there is a huge bar magnet in its centre giving it a magnetic field. ...
... behaves as if there is a huge bar magnet in its centre giving it a magnetic field. ...
Emagnetism - WordPress.com
... magnetic field can induce a current in a circuit. In 1860, JAMES CLERK MAXWELL predicted that a changing electric field has an associated magnetic field and wrote the mathematical equations that describe the force of electromagnetism for the first time. ...
... magnetic field can induce a current in a circuit. In 1860, JAMES CLERK MAXWELL predicted that a changing electric field has an associated magnetic field and wrote the mathematical equations that describe the force of electromagnetism for the first time. ...
1. Society has become increasingly dependent on
... the change in potential energy per unit charge moving from one point to the other (joules/coulomb or volts) Discuss how potential difference between different points around a circuit varies ...
... the change in potential energy per unit charge moving from one point to the other (joules/coulomb or volts) Discuss how potential difference between different points around a circuit varies ...
Galvanometers
... will note that this is not quite the case.) A typical analog ammeter consists of a sensitive galvanometer with a low resistance called a shunt connected in parallel with it. The shunt allows currents to flow through the ammeter that would otherwise burn out the galvanometer. The shunt also allows th ...
... will note that this is not quite the case.) A typical analog ammeter consists of a sensitive galvanometer with a low resistance called a shunt connected in parallel with it. The shunt allows currents to flow through the ammeter that would otherwise burn out the galvanometer. The shunt also allows th ...
Electric motor vs. generator
... Electricity is often generated a long way from where it is used, and is transmitted long distances through power lines. Although the resistance of a short length of power line is relatively low, over a long distance the resistance can become substantial. A power line of resistance R causes a power l ...
... Electricity is often generated a long way from where it is used, and is transmitted long distances through power lines. Although the resistance of a short length of power line is relatively low, over a long distance the resistance can become substantial. A power line of resistance R causes a power l ...
MODULE: MOTORS AND GENERATORS Chapter 7
... (d) If no load is attached to the motor (it does not push anything), then the speed of rotation of the motor increases until the back emf equals the supply emf (the maximum speed of rotation) and no current flows through the motor coil. There is no force on the coil so it does not increase its spee ...
... (d) If no load is attached to the motor (it does not push anything), then the speed of rotation of the motor increases until the back emf equals the supply emf (the maximum speed of rotation) and no current flows through the motor coil. There is no force on the coil so it does not increase its spee ...
Document
... the torque on the loop in a maximum when: a) the plane of the loop is parallel to the direction of the field. b) the plane of the loop is perpendicular to the direction of the field. c) the angle between the plane of the loop and the direction of the magnetic field is somewhere between 0 and 90. d) ...
... the torque on the loop in a maximum when: a) the plane of the loop is parallel to the direction of the field. b) the plane of the loop is perpendicular to the direction of the field. c) the angle between the plane of the loop and the direction of the magnetic field is somewhere between 0 and 90. d) ...
Michael Faraday, one of the great British physicists, in 1831
... Michael Faraday, one of the great British physicists, in 1831 discovered a way to generate an electric current without using a battery. The principle of electro-magnetic Induction which is used in generators and transformers allows electricity to be generated on a large scale. ...
... Michael Faraday, one of the great British physicists, in 1831 discovered a way to generate an electric current without using a battery. The principle of electro-magnetic Induction which is used in generators and transformers allows electricity to be generated on a large scale. ...
magnetic field - DiMaggio
... o Unlike or opposites poles attract The word repel is used when 2 magnets push apart. o Like or same poles repel This attraction or repulsion between magnetic poles is called magnetic ...
... o Unlike or opposites poles attract The word repel is used when 2 magnets push apart. o Like or same poles repel This attraction or repulsion between magnetic poles is called magnetic ...
Galvanometer
A galvanometer is a type of sensitive ammeter: an instrument for detecting electric current. It is an analog electromechanical actuator that produces a rotary deflection of some type of pointer in response to electric current through its coil in a magnetic field.Galvanometers were the first instruments used to detect and measure electric currents. Sensitive galvanometers were used to detect signals from long submarine cables, and to discover the electrical activity of the heart and brain. Some galvanometers use a solid pointer on a scale to show measurements; other very sensitive types use a miniature mirror and a beam of light to provide mechanical amplification of low-level signals. Initially a laboratory instrument relying on the Earth's own magnetic field to provide restoring force for the pointer, galvanometers were developed into compact, rugged, sensitive portable instruments essential to the development of electrotechnology. A type of galvanometer that records measurements permanently is the chart recorder. The term has expanded to include use of the same mechanism in recording, positioning, and servomechanism equipment.