Principles of Electricity and Electromagnetism |
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Page 299
... flux through it changes by an amount do is given by Eq . ( 9.20 ) as dU = i do The magnetic - flux density B is everywhere proportional to the current so the flux through the circuit is also proportional to the current and by analogy ...
... flux through it changes by an amount do is given by Eq . ( 9.20 ) as dU = i do The magnetic - flux density B is everywhere proportional to the current so the flux through the circuit is also proportional to the current and by analogy ...
Page 335
... flux linkage of the coil changes by an amount characteristic of the particular instrument . It is not an absolute device , but must originally be calibrated against a standard solenoid . However , it is very con- venient and rugged and ...
... flux linkage of the coil changes by an amount characteristic of the particular instrument . It is not an absolute device , but must originally be calibrated against a standard solenoid . However , it is very con- venient and rugged and ...
Page 371
... flux densities . Also their hysteresis losses are small . The addition of a few per cent of chromium or molybdenum ... flux densities the perminvars , which are alloys containing about 45 per cent Ni , 30 per cent Fe , and 25 per cent Co ...
... flux densities . Also their hysteresis losses are small . The addition of a few per cent of chromium or molybdenum ... flux densities the perminvars , which are alloys containing about 45 per cent Ni , 30 per cent Fe , and 25 per cent Co ...
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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