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JoakimvE
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I am currently doing a lab trying to calculate internal resitance of a battery. Do I use the formula V=IR?
JoakimvE said:you mean to say, that an ammeter or voltmeter would come to effect my results?
This depends on the meters you are using. If you are using a modern digital meter, then then I doubt that you will be able to detect their presence. If you are using an old fashioned analog meter with a D'Arsonal/needle movement, then yes, they will have a measurable effect.JoakimvE said:you mean to say, that an ammeter or voltmeter would come to effect my results?
JoakimvE said:anyhow, i guess the main problem is how much i varied the resistance by. i just varied the electric field (E)... I am guessing i can't calculate the resistance i added.
Internal resistance of a battery is the resistance within the battery that opposes the flow of electric current. It is caused by the materials and design of the battery, and it is a crucial factor in determining the overall performance and lifespan of the battery.
The higher the internal resistance of a battery, the more energy is lost as heat and the lower the voltage output. This results in decreased performance and shorter run times for devices powered by the battery. Additionally, high internal resistance can also lead to overheating and damage to the battery.
Yes, internal resistance can be measured using a multimeter or specialized battery testing equipment. However, the measurement can vary depending on the testing method and conditions, such as temperature and load.
Internal resistance can be reduced by using high-quality materials and proper design in the battery construction. In addition, keeping the battery at a moderate temperature and avoiding high discharge rates can also help reduce internal resistance.
Yes, the internal resistance of a battery can increase over time due to factors such as aging, usage, and storage conditions. This can result in decreased performance and capacity of the battery. Regular maintenance and proper usage can help slow down this increase in internal resistance.