Elementary Treatise on Electricity and MagnetismLongmans, Green, and Company, 1896 - 576 páginas |
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Página 153
... strength of the current . The unit of current - strength , or , as it is also called more shortly , the unit of current , commonly employed for practical purposes , is that which corresponds to a coulomb per second . Such a current is ...
... strength of the current . The unit of current - strength , or , as it is also called more shortly , the unit of current , commonly employed for practical purposes , is that which corresponds to a coulomb per second . Such a current is ...
Página 154
... strength at a given instant is still expressed by the same formula if we understand by q the small quantity that passes during an indefinitely short interval of time , t , including the instant in question . B 109. Variation of ...
... strength at a given instant is still expressed by the same formula if we understand by q the small quantity that passes during an indefinitely short interval of time , t , including the instant in question . B 109. Variation of ...
Página 155
... strength of the current and to a factor , say p ' , depending on the nature of the materials forming the cell , and on the size and shape of its different parts . Thus if e be the electromotive force of a cell , or the difference of ...
... strength of the current and to a factor , say p ' , depending on the nature of the materials forming the cell , and on the size and shape of its different parts . Thus if e be the electromotive force of a cell , or the difference of ...
Página 156
... strength of the current which traverses it . By experiment it is found that this ratio is constant . If , for example , various differences of potentials , A - B , A ' - B ' , A " B ' , . . . be maintained between the ends of a ...
... strength of the current which traverses it . By experiment it is found that this ratio is constant . If , for example , various differences of potentials , A - B , A ' - B ' , A " B ' , . . . be maintained between the ends of a ...
Página 159
... strength of this current ; then , according to § 109 , the difference of potentials between A and B will be less than the electromotive force , say e , of the stronger cell , and greater than that , e2 , of the weaker cell , by the ...
... strength of this current ; then , according to § 109 , the difference of potentials between A and B will be less than the electromotive force , say e , of the stronger cell , and greater than that , e2 , of the weaker cell , by the ...
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Otras ediciones - Ver todas
Elementary Treatise on Electricity and Magnetism George Carey Foster,Alfred William Porter Vista completa - 1909 |
Elementary Treatise on Electricity and Magnetism George Carey Foster,Edmund Atkinson Vista completa - 1896 |
Términos y frases comunes
acid action ampere angle axis ball battery boundary capacity cell centre charge chemical circuit coating coefficient condenser conducting connected consequently constant copper corresponding coulomb cylinder density dielectric difference of potentials discharge distance effect elec electric field electric force electrified body electrodes electromotive force electroscope element energy equal equation equilibrium equipotential surface experiment expressed external flux formula given glass Hence india-rubber induction inside insulated conductor intensity iron Joule's law joules junction knob Leyden jar lines of force machine magnetic magnetisation measured metal needle negative number of lines opposite direction outer surface parallel passes Peltier effect perpendicular plane plate pole positive electricity produced proportional quantity of electricity quantity of heat represented resistance result solid angle spark sphere strength suppose surface-density T₁ temperature terminals thermo-electric traversed tubes of force unit V₁ V₂ volt wire zinc
Pasajes populares
Página 458 - As a unit of resistance, the international Ohm. which is based upon the ohm equal to 109 units of resistance of the CGS system of electro-magnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grammes in mass, of a constant cross-sectional area, and of a length of 106.3 centimetres.