Hence, while both volts and amperes are widely different in the two circuits, the watts for each are the same in the ideal case, that is, assuming perfect transformer action or 100% efficiency.
By adjusting the counterweight for a given number of amperes required by the arc, the current will be maintained constant by the movement of the secondary coil.
The table of Steinmetz on page 1,464 gives the values of the alternating volts and amperes in units of direct current.
The regulating switch may have to be adjusted occasionally during charge, if it be desired to maintain charging amperes approximately constant.
The common battery tester does not always give the exact number ofamperes of current, but it indicates the relative strength which is really the thing desired.
The quantity of electricity used up in such a lamp is expressed in watts, which is the product of the volts and amperes of the circuit.
The amperes of current determine the rate at which the electricity is being used in any circuit.
A cell that indicates less than 5 amperes should be replaced.
All fuses for branch circuits shall be not more than 10 amperes capacity.
In all cases the product of the number of amperes and the number of hours constitute the ampere-hours of energy produced.
If, however, an electric heater requiring 7 amperes were attached to the circuit, the fuse being intended for only 5 amperes would soon burn out.
In all cases the product of the volts and amperes give the capacity of the lamp in watts.
If an iron requiring 5 amperes of current is attached to a circuit that is intended to carry only 3 amperes the conducting wires will be overheated and may be the cause of serious results.
As an example: a 2-ampere fuse will carry 2 amperes of current without noticeable heating, but at a dangerous overload the fuse will melt and the circuit be broken.
The “strength” of a cell is determined by theamperes of current it is capable of producing; therefore, a meter that will indicate the amount of current being produced is used to test the current strength of the cell.
The quantity of electricity being used in any circuit is the product of the volts of pressure and amperes of current flowing through the wires.
On renewing the liquids during the operation of the pile, a current of 7 amperes is kept up if about a liter of saturation per hour be allowed to pass into the battery.
A run was made with 1 ampere and then with 2 amperes for one hour.
It would not carry 4 amperes for over fifteen or twenty minutes, although the jar was full of water and the plates only ¾ inch apart.
The brass frame is wound with magnet wire, the size depending on the number of amperes to be measured.
These cells having been "run out" beyond the required number ofamperes for automobile use, will give excellent service, considering their cost.
For other angles the value of the current may be found from the following table: Angles Degrees Current Amperes 10 .
This toaster will take four amperes on 110-volt circuit.
By multiplying volts and amperestogether we get watts.
If this happens at your home, examine the fuse and see how many amperes (how much current) it will allow to flow through it.
To find the power of an electric current in terms of horse-power, find the number of watts by multiplying the volts by the amperes and divide the watts by 746 and the result will give you the horse-power of the current.
Multiplying the volts by the amperesgives what is called watts, and there would be 80 watts in each case.
As the current to be interrupted amounts to about tenamperes and is flowing in a highly inductive circuit, the spark at break is considerable.
It is not in general practicable to work coils larger than the ten-inch size with a platinum contact hammer break, as such a butt contact becomes overheated and sticks if more than ten amperes is passed through it.
As the ten-inch coil takes a primary current of ten amperesat sixteen volts when in operation, it requires very substantial platinum contacts to withstand the interruption of this current continuously without damage.
To measure the current inamperes an instrument called an ammeter is used, as shown at A in Fig.
This product of the current in amperestimes the number of turns of wire on the coil is called the ampere-turns.
A single tube will develop 2 to 3 amperes in your aerial.
If the current is multiplied by the amperes a factor is obtained, called Watts.
Now the different arrangement of volts and amperes does not mean that the current strength is changed in the batteries or in the cells.
Thus, as given by several manufacturers, the normal charging rate for a cell of 40 ampere hours should be five amperes, or one-eighth of its ampere hour rating in amperes of charging current.
One manufacturer states that it is not advisable to build knife flashers for more than 15 amperes per double pole switch, as they cannot be depended upon to break a greater load for any length of time.
The ampere feet of a main are found by multiplying the maximum load in amperes by the distance from the fuse block to the electrical center of the load.
The well known ammeters and voltmeters of the authors used for electric light work are now constructed so as to dispense with a constant, and give the readings in amperes and volts without calculation.
The full current of three amperes should be allowed to pass through the winding for a few minutes after the object to be demagnetized is inserted, and then gradually reduced, and the object removed.
Illustration: The Amperes of a Fuse Reduced by Making a Nick in the Lead Wire] Dip-Plating Process The various ways of doing dip plating are practically the same method, the coating fluid consisting of essentially the same materials.
A low-resistance cell must be used here, as before mentioned, one that gives not less than 5 amperes on short circuit.
In this case a current density of 100 amperesat 1 volt is used.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "amperes" in a variety of sentences. We hope that you will now be able to make sentences using this word.