Principles of Electricity and Electromagnetism |
From inside the book
Results 1-3 of 79
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 π ...
... 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 π ...
Other editions - View all
Common terms and phrases
alternating current alternating-current amplitude angle angular velocity anode applied approximately armature assumed atom axis calculated capacity cathode cell centimeter characteristic charge q circuit coefficient coil component condenser conduction conductor considered copper current density current flowing curve cylinder deflection determined dielectric constant direct-current discharge distance effective electric field electromotive force electrons electrostatic element energy equal equation ferromagnetic filament flux force frequency function galvanometer given grad grid hence hysteresis impedance induction insulating integral known Laplace's equation linear load magnetic field magnetic moment magnitude maximum measured medium metal meter molecules negative normal obtained ohms parallel plate polarization potential difference potential wave potentiometer produced proportional quantity R₁ radius ratio rectifier region represents resistance rotation Show shown in Fig solenoid solution substance surface temperature terminals theorem torque tube V₁ vector voltage volts wire written zero