This equation can be written in different forms, eg \ (E= I (R + r)\). To solve problems on internal resistance it should be remembered that such circuits involve using a series circuit with the ...

As shown in the video, to find the EMF and internal resistance of a cell, the following circuit is set up. At the point at which the line meets the terminal potential difference axis there is no ...

Measurement of circuit's attenuation factor and generator's internal resistance leads to r c, the capacitor's ESR: Instead of using a sine wave excitation, we can use a square wave.