29 B= 31 16 1. There are one electron and one proton below with distance given in r terms of r between each particle. Take r = B cm. Take charge of electron and proton in magnitude as 1.609 x 10-19C and Coulomb te constant k= 8.99 x109 Nm-/C2 P a) Calculate net Electric field at point P, what is the direction? (10 points) Calculate net Electric potential at P, does it have a direction? (10 points) 2. Consider the following circuits. a) Calculate equivalent capacitance between A-B terminal if A C1=C2= C4= B UF, C3 = B/2 HF (8 points) R2 B b) Calculate equivalent resistance between A-B R3 terminal if RI=R2=R3 = C 2, R4=Rs= R6 =3CQ (8 points) R6 A B c) Write the Kirchhoff's potential difference rule for left and right loops by drawing your RI R2 chosen current directions and loop directions. M (10 points) R3 82