The Figure Shows a Circuit

question 74

Multiple Choice

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

-At what rate is energy dissipated by R₁ when the switch S is closed on A?

• A)1 W
• B)4 W
• C)9 W
• D)36 W
• E)144 W

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