# Amperes Sentence Examples

If then the amperemeter scale reading was 100 it would show an error of that scale reading of minus 1.9

**amperes**or nearly 2%.At first the current is 3000

**amperes**at 220 volts, increasing to 9000**amperes**at 20 volts after 20 hours.Hence the resistance of the insulator can be ascertained, since it is expressed in ohms by the ratio of the voltage of the battery in volts to the current through the C C galvanometer in

**amperes**.For the total current we have approximately 2.5 X10-"

**amperes**per sq.The diameter of the isthmus was 0.241 mm., and the electromagnet was excited by a current of 40

**amperes**.Kiliani found that the sponge was produced chiefly when a weak solution, or a low current-density, was used, and that hydrogen was usually evolved simultaneously; sound deposits resulted from the use of a current-density of 200

**amperes**, or more, per sq.The ore was crushed roasted, and leached with sulphuric acid (with or without ferric sulphate); the solution was purified and then electrolysed for zinc with lead anodes and with a currentdensity of 5

**amperes**per sq.In Borchers' process the chloride is heated partly by external firing, partly by the heat generated owing to the use of a currentdensity of 90 to loo

**amperes**per sq.The bath is used with a current-density of loo

**amperes**per sq.The electrolyte commonly contains about a lb of copper sulphate and a lb of strong sulphuric acid per gallon, and is worked with a current density of about ro

**amperes**per sq.AdvertisementThe current density is about 700

**amperes**per sq.The current from a Wilde's dynamo was passed, apparently with a current density of 5 or 6

**amperes**per sq.Whilst the jet was playing, a good deposit was formed with so high a current-density as 280

**amperes**per sq.Swan has succeeded in depositing excellent copper at currentdensities exceeding moo

**amperes**per sq.In copper-refining practice, the current-density commonly ranges from 7.5 to 12 or 15, and occasionally to 18,

**amperes**per sq.AdvertisementThe relatively electro-negative character of silver ensures that with moderate current densities no metal (other than precious metals) will be deposited with it; hence, while the solution is pure a current-density of 30

**amperes**per sq.Electric current-The rate of flow of electric charge, measured in

**amperes**.Very convenient and accurate instruments based on the above principles have been devised by Lord Kelvin, and a large variety of these ampere balances, as they are called, suitable for measuring currents from a fraction of an ampere up to many thousands of

**amperes**, have been constructed by that illustrious inventor.Each instrument is accompanied by a pair of weights and by a square root table, so that the product of the square root of the number corresponding to the position of the sliding weight and the ascertained constant for each weight, gives at once the value of the current in

**amperes**.Thus the centi-ampere balance ranges from i to ioo centi-

**amperes**, the deci-ampere balance from i to ioo deci-**amperes**, the ampere balance from i to ioo**amperes**, the deka-ampere balance from i to ioo**amperes**, the hecto-ampere balance from 6 to 600**amperes**, and the kilo-ampere balance from ioo to 2500**amperes**.AdvertisementIn these circumstances the current is known to have a fixed value in

**amperes**determined by the weight attached to the instrument.The total magnetic induction or flux corresponds to the current of electricity (practically measured in

**amperes**); the induction or flux density B to the density of the current (number of**amperes**to the square centimetre of section); the magnetic permeability to the specific electric conductivity; and the line integral of the magnetic force, sometimes called the magnetomotive force, to the electro-motive force in the circuit.The instrument exhibited by Thompson would, without undue heating, take a current of 30

**amperes**, which was sufficient to produce a magnetizing force of woo units.For simplicity of calculation, the clear length of each rod between the yokes is made 12.56 (=47r) centimetres, while the coil surrounding the standard bar contains 100 turns; hence the magnetizing force due to a current of n

**amperes**will be ion C.G.S.Such a furnace, to take a current of 4 H.P. (say, of 60

**amperes**and so volts), measured externally about 6 by 6 by 7 in., and the electrodes were about o 4 in.AdvertisementIn such a furnace a continuous current, for example, of 3000

**amperes**, at 50 to 60 volts, may be used at first, increasing to 5000**amperes**in about half an hour.He enclosed various metallic junctions in a Bunsen ice calorimeter, and observed the evolution of heat per hour with a current of about 1.6

**amperes**in either direction.Currents from the ten-thousandth of an ampere to ten thousand

**amperes**, electrical pressures from a minute fraction of a volt to 100,000 volts, come within the range of his instruments, while the private consumer of electric energy is provided with a meter recording Board of Trade units.The instrument therefore does not begin to read from zero current, but from some higher limit which, generally speaking, is about one-tenth of the maximum, so that an ammeter reading up to io

**amperes**will not give much visible indication below i ampere.The value of the current in

**amperes**is then .?.