APFIVE Kirchhoff's Loop Rule in a Series Circuit
A circuit contains a 12V battery with 0.5Ω internal resistance, connected to three resistors in a loop. Applying Kirchhoff’s loop rule clockwise, which equation correctly represents this circuit if the resistors are 2Ω, 3Ω, and 4Ω in sequence?
A
12V - 0.5I - 2I - 3I - 4I = 0
B
12V + 0.5I - 2I - 3I - 4I = 0
C
12V - 0.5I - 2I - 3I + 4I = 0
D
-12V - 0.5I - 2I - 3I - 4I = 0