26. As shown in Figure circuitry Wheatstone bridge defined resistance R2, R3, R4, electromotive force ε current source and the internal resistance r. Determine resistance R1 it is known that the current in the circuit of the galvanometer G is absent (IG = 0). The resistance of the galvanometer is equal to RG.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)