The next four questions (#33 through #37) focus on the physics of a machine designed to turn on a light bulb. Read the information below and use it to answer the selected-response questions and constructed-response question that follow.
A student designed a complex machine to turn on a light bulb. A diagram of the student’s design is shown.
The circled numbers in the diagram refer to the steps that occurred when the student used the machine to turn on the light bulb.
Several types of energy conversion took place during the steps.
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Step 1: The student released a compressed spring, which pushed a 0.1 kg marble to the left on a table.
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Step 2: The marble fell off the table.
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Step 3: The marble landed on a ramp.
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Step 4: The marble rolled down the ramp and into a plastic cup.
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Step 5: The plastic cup moved downward, which caused a plastic disc to move upward.
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Step 6: The plastic disc collided with a switch in an electric circuit, closing the circuit. The light bulb turned on.
The student’s machine turned on the light bulb by closing the circuit, but the student wanted the light bulb to be brighter. The original circuit is shown.
Which of the following circuits should the student use so that the light bulb will be brighter than it was in the original circuit?
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