Eq. A63: R = R1 + R2 + R3 + .... FIGURE 51. Find the equivalent resistance if the three resistors of Problem 50 are wired in parallel (Fig. 1-11). Use the equation for resistors in parallel, Eq. A64: () = )+ ( R. )+ ( R + ... to find the resistance in parallel. 52. A wire 4.75 x 103 cm long is seen to stretch, when loaded, by 9.55 x 1072 cm. Find the strain