Three Light Bulbs, A, B, and C, Have Electrical Ratings

question 102

Multiple Choice

Three light bulbs, A, B, and C, have electrical ratings as follows: Bulb A: 96.0 W, 1.70 A
Bulb B: 80.0 V, 205 W
Bulb C: 120 V, 0.400 A
These three bulbs are connected in a circuit across a 150-V voltage power source, as shown in the figure. Assume that the filament resistances of the light bulbs are constant and independent of operating conditions. What is the equivalent resistance of this combination of bulbs between the terminals of the power source?

• A)61.5 Ω
• B)15.3 Ω
• C)74.0 Ω
• D)86.2 Ω
• E)364 Ω

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Definitions:

Tension

A force that pulls materials apart, causing stress or strain in geological contexts, such as the stretching of the Earth's crust.

Shear

A strain in materials characterized by slippage along parallel planes, often related to faults and shear zones in geology.

Differential Stress

Stress applied to a rock body in different directions, leading to deformation like folding, faulting, or flowing.

Confining Pressure

The pressure applied equally in all directions on a rock or sediment layer, often increasing with depth in the Earth's crust.