## Principles of Electricity and Electromagnetism |

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Page 130

Likewise, if the galvanometer shows no deflection, there is no current through the

v I-wwww^mmaawwvaaa^-I b difference which is the emf . of the

Likewise, if the galvanometer shows no deflection, there is no current through the

**cell**and the potential difference between its terminals is the open-circuit potentialv I-wwww^mmaawwvaaa^-I b difference which is the emf . of the

**cell**.Page 174

energy expended in an external circuit connected to the

origin in these forces. They are atomic or electronic forces and may be only

partially understood by analogy with ordinary mechanical forces, for they appear

to be ...

energy expended in an external circuit connected to the

**cell**terminals has itsorigin in these forces. They are atomic or electronic forces and may be only

partially understood by analogy with ordinary mechanical forces, for they appear

to be ...

Page 179

consequence of the fundamental laws of thermodynamics can be applied to a

reversible

energy," and T is the absolute temperature. The change in internal energy of the

consequence of the fundamental laws of thermodynamics can be applied to a

reversible

**cell**. It may be written1 where E is the internal energy, ^ is the "freeenergy," and T is the absolute temperature. The change in internal energy of the

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### Common terms and phrases

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 discharge effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer given grad grid hence hysteresis impedance induction integral ions known Laplace's equation length linear load magnetic field magnetic induction magnitude maximum measured metal meter negative normal obtained ohms oscillations output parallel phase plane plate polarization positive potential difference potential wave potentiometer produced proportional quantities radiation radius ratio reactance region represents resistance resonant rotation Show shown in Fig solenoid solution surface temperature terminals theorem torque tube unit vector velocity voltage volts wire written zero