Battery Internal Resistance

A battery with an internal resistance of \(r\) and an emf of 11.25\(\textrm{ V}\) is connected to a load resistor \(R =\) 3\(r\) and current \(I_0\) flows. As the battery ages, the internal resistance increases by a factor of 4.

Part 1

Find the ratio \(I\_\mathrm{f}/I_0\), where \(I\_\mathrm{f}\) is the final current after the battery has aged.

Answer Section

Please enter a rational number.

Attribution

Problem is from the OpenStax University Physics Volume 2 textbook, licensed under the CC-BY 4.0 license.