Determine the directions of the currents in each resistor. Assume that each battery has internal resistance (r = 1.0 , Ω).
a) Clockwise, Counterclockwise, Clockwise
b) Counterclockwise, Clockwise, Counterclockwise
c) Clockwise, Clockwise, Counterclockwise
d) Counterclockwise, Counterclockwise, Clockwise