3. [-11 Points] DETAILS OSCOLPHYSZO16 21.3.WA.036.TUTORIAL. MY NOTES Due to a weak connection, there is a break in the circuit (shown below) between points a and b. If R1 = 5.13 (1, R2 = 2.19 n, and R3 = 14.7 (1, and the two batteries 81 and 82 have voltages of 20.0 V and 6.50 V respectively, find the potential difference Vab- Be sure to include the Sign of the potential difference. Vab=Vb-Va =:]V 5. K1