(a) For the circuit show in Fig. 18.10, traverse loop 3 opposite to the direction shown, and demonstrate that the resulting equation is the same as that obtained if you had followed the direction of the arrows.

(b) Repeat the procedure in part (a) by traversing loops 1 and 2 in the direction opposite that taken in the text, and demonstrate that equations equivalent to those in Example 18.5 are obtained.

Loop 2 12V 2.0 Loop 1 6.0 V 6.0 V Loop 3