Principles of Electricity and Electromagnetism |
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Page 135
... wire to melt for a short - circuit current of 25 amp . and what will then be the temperature of the copper wire ? ( Neglect the loss of heat by conduction , etc. ) 6. Three resistances of 1 , 3 , and 5 ohms , respectively , are ...
... wire to melt for a short - circuit current of 25 amp . and what will then be the temperature of the copper wire ? ( Neglect the loss of heat by conduction , etc. ) 6. Three resistances of 1 , 3 , and 5 ohms , respectively , are ...
Page 305
... wire , ( 2 ) the region of the wire itself . Region 1 is assumed to be very much greater than region 2. In region 1 it will be legitimate to consider all the current as concentrated in the central filament of the wire of radius of ...
... wire , ( 2 ) the region of the wire itself . Region 1 is assumed to be very much greater than region 2. In region 1 it will be legitimate to consider all the current as concentrated in the central filament of the wire of radius of ...
Page 557
... wire can be obtained from Eq . ( 16.31 ) . The emf . induced . in a wire of length 1 is E. 1 , and since n is a unit vector perpendicular to E , Eq . ( 16.31 ) can be written 2π / A E ' a , where E ' is a vector of length E but rotated ...
... wire can be obtained from Eq . ( 16.31 ) . The emf . induced . in a wire of length 1 is E. 1 , and since n is a unit vector perpendicular to E , Eq . ( 16.31 ) can be written 2π / A E ' a , where E ' is a vector of length E but rotated ...
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alternating current alternating-current ampere amplifier amplitude angle angular anode antenna applied approximately armature assumed atom axis calculated capacity cathode cell characteristic charge circuit coefficient coil component condenser conducting conductor considered constant curl current flowing curve deflection density determined dielectric dielectric constant direct-current direction dynamic resistance effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer grad harmonic hence impedance induction integral ions known length linear load magnetic field magnetic moment magnitude maximum measured meter negative obtained ohms oscillations output parallel phase plane plate current positive potential difference potentiometer quantities R₁ radiation radius ratio reactance region represents resistance resonant rotation scalar shown in Fig solution surface temperature terminals theorem torque transconductance triode tube unit vacuum tube vector velocity voltage volts wave wire written zero