## 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 the

...

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 the

...

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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 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