# Amperes Sentence Examples

- The magnet ' is wound to a resistance of
**amperes**with accumulators). - At first the current is 3000
**amperes**at 220 volts, increasing to 9000**amperes**at 20 volts after 20 hours. - 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%. - 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. - 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. - 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**. - In 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. - In diameter the maximum elongation was nearly doubled when a current of two
**amperes**was passing through the iron, while the " critical value " of the field was increased from 130 to 200. - A third platinum coil, wound non-inductively between the primary and the secondary, served to carry the current by which the ring was heated; a current of 4.6
**amperes**, with 16 volts across the terminals, was found sufficient to maintain the ring at a temperature of 11 50° C. In the ring itself was embedded a platinum-thermometer wire, from the resistance of which the temperature was determined. - 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. - In diameter, while for a current of 100 H.P. (say, of 746
**amperes**and Too volts) it measured about 14 by 12 by 14 in., and the electrodes were about 1 . - In 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. - Hence if the galvanometer is calibrated by a potentiometer we can determine the value of this current in
**amperes**, and knowing the value of n and V thus determine C. Various forms of commutator have been devised for effecting this charge and discharge rapidly by J. - The principle on which the instrument works is as follows: Suppose any circuit, such as an electric motor, lamp or transformer, is receiving electric current; then the power given to that circuit reckoned in watts is measured by the product of the current flowing through the circuit in
**amperes**and the potential difference of the ends of that circuit in volts, multiplied by a certain factor called the power factor in those cases in which the circuit is inductive and the current alternating. - By Ohm'S Law, And By The Definition Of Difference Of Electric Pressure Or Potential, We Obtain The Following Alternative Expressions For The Quantity Of Heat H In Joules Generated In A Time T Seconds By A Current Of C
**Amperes**Flowing In A Wire Of Resistance R Ohms, The Difference Of Potential Between The Ends Of The Wire Being E = Cr Volts: H=Ect=Crt=E Z T/R. - Of 50 to too
**amperes**are recommended by the former, and of 300**amperes**by the latter. - 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 value of the current in
**amperes**is then .?.