## 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 ...

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 ...

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 ' li ' , where V ' is the maximum potential that can be measured

...

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 ' li ' , where V ' is the maximum potential that can be measured

...

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angle applied approximately assumed atom axis becomes calculated capacity carrying cell characteristic charge circuit closed coil component condition conducting conductor connected considered constant curve density depends determined dielectric difference direction discharge discussion distance effective electric electrons element energy equal equation evident expression factor field flow flux force frequency function galvanometer given grid hence impedance important increases indicated induction integral ions known length limited linear load losses magnetic magnetic field magnitude maximum means measured mechanical metal meter method negative normal obtained oscillations parallel path period phase placed plate positive potential present produced proportional quantities radius ratio reduced region relation represents resistance respect result rotation seen separation Show shown simple solution space surface temperature terminals transformer tube unit vector volts volume wave wire written zero