Since the resistances are in parallel, the voltage in each one is the same, so:
a. V1 = 60 V
b. V2 = 60 V
c. V3 = 60 V
d.
The total resistance of parallel resistances can be calculated with the formula below:
![\begin{gathered} (1)/(RT)=(1)/(R1)+(1)/(R2)+(1)/(R3)\\ \\ RT=(R1\cdot R2\cdot R3)/(R1R2+R2R3+R1R3)\\ \\ RT=\frac{11\cdot17\cdot12}{11\cdot17+17\operatorname{\cdot}12+11\operatorname{\cdot}12}\\ \\ RT=(2244)/(523)\\ \\ RT=4.29\text{ ohms} \end{gathered}]()
e.
The total current is given by the voltage divided by the total resistance:

The current in each resistor is given by the voltage divided by the resistance:
f.

g.

h.
