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What design characteristics determine the voltage and the current capacity of a battery?
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Why can't you use a multitester as an ohmmeter if it has no battery?
The battery is used by the meter to apply a voltage across the resistance being measured and determine the current which determines the resistance. If there is no battery it can't supply the voltage and can't measure current, so no reading.
What does Wh and mAH mean on a battery?
The battery can supply an amount of electric charge measured in milliampere-hours, which expresses its capacity to supply a load of a number of milliamps for a number of hours. The idea is that if the load current is high, the battery lasts for less time, so the current times the time makes good measure of the capacity. It is also common practice to measure larger batteries in amp-hours, and there are 1000 mAH in one AH. This measure is a nominal one because in practice a high current load will give a lower AH capacity than when the load is small. Multiplying the voltage by the AH capacity gives the watt-hour capacity, which measures how much energy the battery can supply. This measures is also only a nominal only because as the battery runs down its voltage reduces.
What is the charging time on a 9.6 volt battery?
No, not unless it has a voltage or current regulator or series resistance to limit the current (built in somewhere).
A 19 V battery delivers 114 mA of current when connected to a 72 resistor. Determine the internal resistance of the battery.?
Internal resistance is approximately equal to 94.667
Which 12 volt bulb will draw the most current when connected to a 12 volt battery?
The bulb with the lowest resistance. Current = Volts / Resistance
Can you use 300mA adapter for a 1050mA camera battery?
It depends on how its connected and how much current the camera needs to run on. The "1050ma" figure is the capacity of the battery not how much current the camera uses and it should read 1050mah which is a capacity measurement not a current measurement.
What is the effect of high temperature of current carrying capacity of battery?
The higher the temperature of a battery, the faster the chemical reactions in the battery, and the shorter the battery life span.
How do you calculate battery Capacity?
A battery's capacity is measured in Amp Hours. This is how many Amps of current a battery can provide in a given number of hours. A battery can produce a lot of current for a short time, or a little current for a long time. A curious property of chemical batteries is they are able to provide a higher total energy capacity if they are discharged at lower rates. For example, a particular battery may be able to provide 10 amps of current for 1 hour for a battery capacity of 10 Ahr. The same battery may be able to be discharged at 5 amps for a 2.5 hour discharge period for a capacity of 12.5 Ahr. And at a discharge rate of 1 amp the exact same battery may may last 15 hours for a capacity measurement of 15 Ahr. For that reason typically battery capacity is specified over a standard period of 10 or 20 hours time. When comparing batteries, make sure that the test period for the battery rating is the same. A battery with 100 Ahr over a 20 hour test period is not the same as a battery with 100 Ahr over a 10 hour test period.
Does batteries connected in parallel increase the current capacity to the circuit?
If each battery is identical, yes.
What design characteristics determined the current capacity of a battery?
The surface area of the plates. This area is increased dramatically in car batteries by making a fine paste of Lead/Antimony and pressing it into a lead matrix plate. This presents a huge area to the sulphuric acid and increases it's storage capacity and ampere/hour delivery.
If you have a circuit consisting of a battery and a wire What two factors determine the amount of current in the circuit?
The voltage of the battery, and the resistance of the circuit (including the resistance of the wire and the internal resistance of the battery).
What kind of test can determine that an electric current is flowing in a straight copper wire is connected to a battery?
A compass needle test will determine whether a current is flowing in the wire.IF the current is flowing the compass needle will deflect from alignment with the wire.
Why can't you use a multitester as an ohmmeter if it has no battery?
The battery is used by the meter to apply a voltage across the resistance being measured and determine the current which determines the resistance. If there is no battery it can't supply the voltage and can't measure current, so no reading.
A resistor is required to limit the current taken by a battery when being charged from a 25V dc source. Continued......?
QUESTION (continued from above) ....The battery has negligible resistance and its open-circuit voltage is 20V. Determine the resistance, if the current to the battery is to be limited to 25A.
Can lead acid battery work as alkaline battery?
Perhaps it would be possible to replace an alkaline battery with a lead acid battery of the same voltage and current capacity. BUT the construction, size, and chemistry of the two types are totally different.
Does your car battery have 12 volts 6 amps?
12 V - probably, although ther are exceptions. 6 Amps - ?? 6 Ams would be a measure of a current draw, and a battery is a current source. A car battery might have a capacity of 60 amp hours or thereabouts.
What does Wh and mAH mean on a battery?
The battery can supply an amount of electric charge measured in milliampere-hours, which expresses its capacity to supply a load of a number of milliamps for a number of hours. The idea is that if the load current is high, the battery lasts for less time, so the current times the time makes good measure of the capacity. It is also common practice to measure larger batteries in amp-hours, and there are 1000 mAH in one AH. This measure is a nominal one because in practice a high current load will give a lower AH capacity than when the load is small. Multiplying the voltage by the AH capacity gives the watt-hour capacity, which measures how much energy the battery can supply. This measures is also only a nominal only because as the battery runs down its voltage reduces.
