## Principles of Electricity and Electromagnetism |

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Page 129

For lower resistances a

resistance element with one or more taps or sliding contacts if both terminals of

the ...

For lower resistances a

**potentiometer**method is generally employed. 4.7. The**Potentiometer**.—The term**potentiometer**is used to refer in general to anyresistance element with one or more taps or sliding contacts if both terminals of

the ...

Page 133

The

measurement. It is indespensable in electrochemistry for measuring the emf.

developed by various voltaic cells, as important chemical quantities can be

deduced from these ...

The

**potentiometer**finds application in almost every field of electricalmeasurement. It is indespensable in electrochemistry for measuring the emf.

developed by various voltaic cells, as important chemical quantities can be

deduced from these ...

Page 134

An ammeter can be calibrated with a

The circuit is shown at the right in Fig. 4.23. The standard resistance S should be

of the order of V//i', where V' is the maximum potential that can be measured by ...

An ammeter can be calibrated with a

**potentiometer**and a standard resistance.The circuit is shown at the right in Fig. 4.23. The standard resistance S should be

of the order of V//i', where V' is the maximum potential that can be measured by ...

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alternating current alternating-current amplitude angle angular velocity anode antenna applied approximately armature assumed atom axis calculated capacity cathode centimeter characteristic circuit coefficient coil component condenser conducting conductor considered curl current flowing curve deflection density determined dielectric constant direct-current direction discharge displacement distance effective electric field electromotive force electrons electrostatic element energy equal equation ferromagnetic flux force frequency function galvanometer given grad grid hence hysteresis impedance induction integral ions known Laplace's equation linear load magnetic field magnetic moment magnitude maximum measured meter motor negative normal obtained ohms oscillations output parallel phase plane plate polarization positive potential difference potentiometer produced proportional quantity radiation radius ratio reactance region represents resistance resonant rotation Show shown in Fig solenoid solution substance surface temperature terminals theorem torque transformer tube unit vector voltage volts wave wire written zero