The figure shows a circuit.The switch S can be closed on either point A or C,but not both at the same time.Use the following quantities:
V₁ = V₂ = 12 V
R₁ = R₄ = 1.0 W
R₂ = R₃ = 2.0 W

-Determine the current through R₄ when the switch S is closed on C.
A)zero amperes
B)2 A
C)3 A
D)6 A
E)24 A

Question

The figure shows a circuit.The switch S can be closed on either point A or C,but not both at the same time.Use the following quantities:
V₁ = V₂ = 12 V
R₁ = R₄ = 1.0 W
R₂ = R₃ = 2.0 W
 
-Determine the current through R₄ when the switch S is closed on C.
A)zero amperes 
B)2 A 
C)3 A 
D)6 A 
E)24 A

Quizplus · Accepted Answer

When the switch S is closed on C, R₄ is short-circuited, meaning the current will preferentially flow through the path of least resistance, which is the wire bypassing R₄, resulting in zero current through R₴.

The Figure Shows a Circuit