Gas voltameter for determining the strength of current by the volume of gas evolved.
What form of voltameter has been selected to measure the International ampere?
The International ampere is represented sufficiently well for practical use by the unvarying current which, when passed through a silver voltameter (as described above) deposits silver at the rate of .
The silver voltameter arranged as here specified: The cathode on which the silver is to be deposited shall take the form of a platinum bowl, not less than 10 cms.
Queen weight voltameter for determining the strength of current by the weight of metal deposited in a given time.
How should the plates of a weight voltameter be treated before use?
A voltameter is an electrolytic cell employed to measure an electric current by the amount of chemical decomposition the current causes in passing through the cell.
The electrochemical apparatus was a voltameter containing a definite compound to be electrolysed, or a voltaic cell or battery.
Thus the electromotive force of the disk was opposed by a back electromotive force θε due to the chemical action in the voltameter or battery, to which the wires from the disk were connected.
As soon as the decomposing current ceases to flow, the gases formed try to rush together again; in fact, if the water voltameter be disconnected from the cells and connected with a galvanoscope, the presence of a current will be shown.
During the experiment the positive plate of the voltameter lost in weight 0.
It remains for us to describe this voltameter itself, and to show the rendering of it.
Under such conditions, a voltameter having an internal resistance of 1 ohm produces 0.
Experiments made with a voltameterhaving platinum electrodes separated by an interval of 3 or 4 centimeters showed that for a determinate E.
The constants of the voltameter established by Commandant Renard are as follows: Height of external electrode 3.
The industrial voltameter consists of a large iron cylinder.
We may estimate the value of a voltameter at a hundred francs.
A laboratory voltameter consists either of a U-shaped tube or of a trough in which the electrodes are covered by bell glasses (Fig.
To prevent these changes having too great an effect on the current, some resistance besides that of the voltametershould be inserted in the circuit.
In employing the silver voltameter to measure currents of about 1 ampere, the following arrangements should be adopted.
The resistance of thevoltameter changes somewhat as the current passes.
In the following specification the term silver voltameter means the arrangement of apparatus by means of which an electric current is passed through a solution of nitrate of silver in water.
If changed to two groups of fifteen each, the quantity is doubled--that is to say, it will produce double the quantity of the mixed gases from the voltameterwith half the intensity.
If, for example, the tubes of the voltameterdescribed on page 38 were graduated, the volume of gas evolved would be a measure of the current.
If a current be sustained in a constant state, it will decompose the fluid in one voltameter only, or in twenty others if they be placed in the circuit, in each to an amount equal to that in the single one.
His most important contribution at this date was the invention of the voltameter and his enunciation of the laws of electrolysis.
The voltameter provided a means of measuring quantity of electricity, and in the hands of Faraday and his successors became an appliance of fundamental importance.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "voltameter" in a variety of sentences. We hope that you will now be able to make sentences using this word.
