![Find the emf(V) and internal resistance (r) of a single battery which is equivalent to a parallel combination of two batteries of emfs V1 and V2 and internal resistance r1 and r2 Find the emf(V) and internal resistance (r) of a single battery which is equivalent to a parallel combination of two batteries of emfs V1 and V2 and internal resistance r1 and r2](https://haygot.s3.amazonaws.com/questions/1012113_1dbdad3604904e2aad470b55ef2901cc.png)
Find the emf(V) and internal resistance (r) of a single battery which is equivalent to a parallel combination of two batteries of emfs V1 and V2 and internal resistance r1 and r2
![Shown an arrangement to measure the emf `(epsilon)`and internal resistance r of a battery. The - YouTube Shown an arrangement to measure the emf `(epsilon)`and internal resistance r of a battery. The - YouTube](https://i.ytimg.com/vi/6e5LJj0XOKA/maxresdefault.jpg)
Shown an arrangement to measure the emf `(epsilon)`and internal resistance r of a battery. The - YouTube
![A battery having an emf of 9.00 V delivers 117 mA when connected to a 72.0-Omega load. Determine the internal resistance of the battery to the neared thousandth. | Homework.Study.com A battery having an emf of 9.00 V delivers 117 mA when connected to a 72.0-Omega load. Determine the internal resistance of the battery to the neared thousandth. | Homework.Study.com](https://homework.study.com/cimages/multimages/16/diagram_450x5757386237163028033.png)
A battery having an emf of 9.00 V delivers 117 mA when connected to a 72.0-Omega load. Determine the internal resistance of the battery to the neared thousandth. | Homework.Study.com
![How to measure a battery's internal resistance with a battery tester and other measurement applications | Hioki How to measure a battery's internal resistance with a battery tester and other measurement applications | Hioki](https://www.hioki.com/themes/hioki/images/global/learning/usage/resistance-meters_2-img-01.png)