1. (i) iron 1 for 1 mark (ii) 20 2 gains 2 marks else working gains 1
... no credit for just ‘step-down transformer’ accept ‘…less turns…’ do not credit ‘…fewer coils…’ or ‘the p.d. across the input / primary will be greater than the p.d. across the output / secondary’ ...
... no credit for just ‘step-down transformer’ accept ‘…less turns…’ do not credit ‘…fewer coils…’ or ‘the p.d. across the input / primary will be greater than the p.d. across the output / secondary’ ...
Observations of electricity go back to the discovery of static cling
... battery is boosted to a higher altitude. The source of energy for a battery's ski lift comes from chemical processes. Those of you interested in the exact nature of this chemical process can read starting on Page 490 of the textbook; however, this is not recommended until after we've examined chemis ...
... battery is boosted to a higher altitude. The source of energy for a battery's ski lift comes from chemical processes. Those of you interested in the exact nature of this chemical process can read starting on Page 490 of the textbook; however, this is not recommended until after we've examined chemis ...
Answers - Manhattan Press
... Edison thought that a practical light bulb should have a wire of high resistance because a wire of high resistance will convert more electrical energy into heat. When the wire is very hot, it glows and emits light. ...
... Edison thought that a practical light bulb should have a wire of high resistance because a wire of high resistance will convert more electrical energy into heat. When the wire is very hot, it glows and emits light. ...
Electricity and Magnetism
... Magnetic Effects from Electricity Electrical Effects from Magnetism Electromagnetic Radiation ...
... Magnetic Effects from Electricity Electrical Effects from Magnetism Electromagnetic Radiation ...
Electricity Ch. 18 Sect. 3
... The Electromagnetic Force 〉How are electricity and magnetism related? 〉Electricity and magnetism are two aspects of a single force, the electromagnetic force. • The energy that results from these two forces is called electromagnetic (EM) energy. • Light is a form of electromagnetic energy. • EM wave ...
... The Electromagnetic Force 〉How are electricity and magnetism related? 〉Electricity and magnetism are two aspects of a single force, the electromagnetic force. • The energy that results from these two forces is called electromagnetic (EM) energy. • Light is a form of electromagnetic energy. • EM wave ...
PHYSICS 100 ELECTROSTATICS
... other and opposite charges attracted each other. By using an electroscope, the polarity and relative strength of the charge could be determined. Conductors are materials that allow charge to flow easily through them. Most metals are excellent conductors. Insulators are materials that do not permit t ...
... other and opposite charges attracted each other. By using an electroscope, the polarity and relative strength of the charge could be determined. Conductors are materials that allow charge to flow easily through them. Most metals are excellent conductors. Insulators are materials that do not permit t ...
small power generator for wind power plants
... power factor of the machine and size of reactive energy. In case, when the induction machine works with decreased terminal voltage about double value of stator voltage drop, the machine retains its constant power factor. The decreased terminal voltage and losses replacement limitative of rated power ...
... power factor of the machine and size of reactive energy. In case, when the induction machine works with decreased terminal voltage about double value of stator voltage drop, the machine retains its constant power factor. The decreased terminal voltage and losses replacement limitative of rated power ...
IB 10.1 Fields Feb 9 Agenda
... Every conservative force has a corresponding potential energy defined such that the potential energy is the opposite of the work done by the conservative force. ...
... Every conservative force has a corresponding potential energy defined such that the potential energy is the opposite of the work done by the conservative force. ...
magnetic
... proportional to the current. If the coil's movement is opposed by a coil spring, then the amount of deflection of a needle attached to the coil may be proportional to the current passing through the coil. Such "meter movements" were at the heart of the moving coil meters such as voltmeters and ammet ...
... proportional to the current. If the coil's movement is opposed by a coil spring, then the amount of deflection of a needle attached to the coil may be proportional to the current passing through the coil. Such "meter movements" were at the heart of the moving coil meters such as voltmeters and ammet ...
Electro-motive force (EMF)
... Clashing current model: currents (positive and negative) leave from the two poles and light bulb where they clash (Jaakkola et al., 2011, Driver et al., 1994, Osborne and Freyberg, 1985); Current consumption model/attenuation model: In a closed circuit, the cell is a source of current that is consta ...
... Clashing current model: currents (positive and negative) leave from the two poles and light bulb where they clash (Jaakkola et al., 2011, Driver et al., 1994, Osborne and Freyberg, 1985); Current consumption model/attenuation model: In a closed circuit, the cell is a source of current that is consta ...
High voltage
The term high voltage usually means electrical energy at voltages high enough to inflict harm on living organisms. Equipment and conductors that carry high voltage warrant particular safety requirements and procedures. In certain industries, high voltage means voltage above a particular threshold (see below). High voltage is used in electrical power distribution, in cathode ray tubes, to generate X-rays and particle beams, to demonstrate arcing, for ignition, in photomultiplier tubes, and in high power amplifier vacuum tubes and other industrial and scientific applications.