Respuesta :

Answer:C

Explanation:

For parallel connection

  • 1/R=1/R1+1/R2+1/R3
  • 1/R=1/12+1/6+1/4
  • 1/R=1+2+3/12
  • 1/R=1/2
  • R=2ohm

For series connection

Net resistance

  • R=2+3=5ohm