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As a battery ages and is used up what will the internal resistance be?
Wiki User
∙ 14y ago
As it ages, its Kirchhoff virtual 'internal resistance' increases. Pictured this way, the practical effect is that the open-circuit voltage of a failing cell still measures good, but the voltage quickly sags when you try to draw any current from it
Wiki User
∙ 14y ago
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Why meter bridge can't be used to measure low resistance and high resistance?
used to measure low Resistance since it must reach a null.
What is the ohm unit used to measure?
Ohms measure electrical resistance. The resistance in ohms is the voltage divided by the current.
A battery consists of which type of cells?
Either wet or dry cells are used to make a battery.
What is a deep cycle battery?
a deep cycle battery i a battery that you can charge and discharge over and over without harming the cells in the battery unlike a normal battery . deep cycle batteries are normally used in boats
Passive resistance used by both enslaved men and women in the Caribbean?
outline two examples of passive resistance led by women in the Caribbean
What is lost volts?
A battery is rated to supply a certain number of volts. However, it actually supplies less, because they are "lost" as the current has to get out of the battery in the first place.(The battery has internal resistance)The amount of lost volts depends on the current being drawn:The less resistance a circuit has, the more current is drawn, because it's easier to flow.Example:If the circuit has little resistance, it draws a large current and the battery's internal resistance causes more lost volts.If the circuit has high resistance, it draws a small current and there are fewer lost volts.This is why when you short-circuit a battery (give it hardly any resistance to go through) it heats up and may explode. A large current is drawn and all the volts are used by the battery's internal resistance.
Does a Lithium-ion battery retain its charge even if not used?
All batteries have an internal resistance and will discharge itself over a period of time.
Anderson Bridge for measuring inductance and resistance?
yes.it is used to find self-inductance and internal resistance
What is a breastplate for?
a breastplate is used to protect the internal organs, stomach, and the torso it was also used in the middle ages
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.
If voltage is not used up in a circuit then why does a battery go flat?
All rechargable batteries have an internal resistance, which will discharge them over time even when they're not hooked up to anything. A good lead-acid battery will lose around 20% of their charge in 60-90 days depending on temperature.
Why internal resistance of an ideal voltage source is zero and an ideal current source is infinty?
Current source means current generator for a circuit. An ideal current source gives all current to the circuit, but practically a current source does n't give all current to the circuit, instead, a source resistor is connected in parallel to the current source to indicate the current drop.
How many volts are in a battery?
The voltage (Electro Motive Force or EMF) of a battery depends on the type of cell used and the number of cells in series. For example, the lead/acid battery in a car has six cells in series, and each one has a EMF of 2.2 volts when fully charged but not being charged, making 13.2 volts. When being charged, the voltage on each cell is raised by 0.1 volts, making the voltage now 13.8 volts. When loaded, the battery output voltage will droop to some lower voltage due to the load current flowing through it's internal resistance. The amount of droop depends on the amount of load, the internal resistance, and the condition of the battery. Various other battery systems have other cell voltages etc. Almost all cell types have EMFs in the 0.5 to 5 volt ranges.
How does an AVO meter work to read resistance?
The AVO has a battery in it. Some AVOs have a 1.5 v battery plus a 15 v battery, used for measuring large resistances. The battery pushes current through the resistor being tested, and the meter measures the current. Because the battery voltage varies, you have to set the zero-ohm point by adjusting a control each time a resistance measurement is done.
What is the purpose of manganese dioxide in a Duracell battery?
Manganese dioxide is used in all brands of dry cell batteries (both the old acidic electrolyte formula and the modern alkaline electrolyte formula) as a catalyst to speed the conversion of microscopic hydrogen gas bubbles that form on the zinc electrode during use back into water. If allowed to accumulate these hydrogen bubbles raise the internal resistance and cause a battery to appear to go dead long before it has died.So called "rechargeable alkaline batteries" are not actually rechargeable, their "charger" just applies a small reverse current which further speeds conversion of the microscopic hydrogen gas bubbles back into water. The correct term for this process is rejuvenation, as all it does is reduce internal resistance of the battery.
Why does a lab top come with a built in battery in stead of a power cord like desk top does?
A laptop is designed to be portable, which is why a laptop has an internal battery. Laptops can also be powered using a cable plugged into the mains. This power cable is also used to recharge the battery. One advantage of the internal battery in a laptop is, if there is a sudden power outage, the battery will continue to power the laptop until the battery runs down. In a power outage, a desktop computer would simply stop working.
Where does the energy go when a battery is used up?
It goes to whatever is connected to the battery. For example, if you connect a light bulb to the battery, the energy goes into the light bulb.If the battery slowly drains its power, without any connected load - as batteries tend to do - then internal processes in the battery will ultimately convert the energy into heat, which will quickly go into the environment. In other words, the energy is wasted.
