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                    <OTText id="909a810c-fbf8-11df-85bf-af94c592173a" text="1. In a simple circuit with a battery, a light, and a switch, what happens to the flow of electrons when the switch is turned on?" />
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                        <OTText id="909be09e-fbf8-11df-85bf-af94c592173a" text="The electrons don’t move." />
                        <OTText id="909be09f-fbf8-11df-85bf-af94c592173a" text="The electrons continue moving in the same direction as when the switch was off." />
                        <OTText id="909be0a0-fbf8-11df-85bf-af94c592173a" text="The electrons move back and forth, changing direction several times a second." />
                        <OTText id="909c55d1-fbf8-11df-85bf-af94c592173a" text="The electrons start moving in one direction." />
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                    <OTText id="909c7ce3-fbf8-11df-85bf-af94c592173a" text="2. In the image above, the electric field island is not shown. However, based on the movement of electrons, the electric field island" />
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                        <OTText id="909ca3f5-fbf8-11df-85bf-af94c592173a" text="must have a small positive charge." />
                        <OTText id="909ca3f6-fbf8-11df-85bf-af94c592173a" text="must have a large positive charge." />
                        <OTText id="909ccb07-fbf8-11df-85bf-af94c592173a" text="must have a large negative charge." />
                        <OTText id="909cf218-fbf8-11df-85bf-af94c592173a" text="must have a small negative charge." />
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                    <OTText id="909cf21a-fbf8-11df-85bf-af94c592173a" text="3. How could you stop the flow of electrons in the system shown in Question 2?" />
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                        <OTText id="909d192c-fbf8-11df-85bf-af94c592173a" text="Decrease the number of electrons to about one third of the original amount." />
                        <OTText id="909d192d-fbf8-11df-85bf-af94c592173a" text="Increase the negative charge on the island." />
                        <OTText id="909d192e-fbf8-11df-85bf-af94c592173a" text="Turn off the charge on the island." />
                        <OTText id="909d192f-fbf8-11df-85bf-af94c592173a" text="Make the island slightly positively charged." />
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                <OTQuestion id="909d4040-fbf8-11df-85bf-af94c592173a" name="Trans_4">
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                    <OTText id="909d4041-fbf8-11df-85bf-af94c592173a" text="4. What state is the above transistor in?" />
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                        <OTText id="909d6753-fbf8-11df-85bf-af94c592173a" text="on" />
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                <OTQuestion id="909d6755-fbf8-11df-85bf-af94c592173a" name="Trans_5">
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                    <OTText id="909d6756-fbf8-11df-85bf-af94c592173a" text="5. Being as specific as possible, explain how you would change the state of the transistor shown in Question 4." />
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                <OTQuestion id="909d8e69-fbf8-11df-85bf-af94c592173a" name="Trans_6">
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                    <OTText id="909d8e6a-fbf8-11df-85bf-af94c592173a" text="6. Which of the following coupled transistor designs would allow for the flow of electrons?" />
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                        <OTText id="909db57c-fbf8-11df-85bf-af94c592173a" text="Coupled Transistor Design A" />
                        <OTText id="909db57d-fbf8-11df-85bf-af94c592173a" text="Coupled Transistor Design B" />
                        <OTText id="909db57e-fbf8-11df-85bf-af94c592173a" text="Coupled Transistor Design C" />
                        <OTText id="909ddc8f-fbf8-11df-85bf-af94c592173a" text="Coupled Transistor Design D" />
                        <OTText id="909ddc90-fbf8-11df-85bf-af94c592173a" text="Both A and B" />
                        <OTText id="909e03a1-fbf8-11df-85bf-af94c592173a" text="Both A and D" />
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                    <OTText id="909e2ab3-fbf8-11df-85bf-af94c592173a" text="7. You are charged with the task of designing a computerized chip that can detect the presence of polluting ozone in the atmosphere. You decide to experiment with transistors to create this chip. You discover that there is a metallic alloy that can act as an efficient transistor gate, and that the metallic alloy also reacts with ozone in such a way that the gate loses voltage. Describe how this transistor would operate to detect atmospheric ozone." />
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                <OTQuestion id="909e51c6-fbf8-11df-85bf-af94c592173a" name="Trans_8">
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                    <OTText id="909e51c7-fbf8-11df-85bf-af94c592173a" text="8. Which of the following graphs represents the relationship between gate voltage and drain current in the MOSFET shown above?" />
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                        <OTText id="909e51c9-fbf8-11df-85bf-af94c592173a" text="Graph A" />
                        <OTText id="909e78da-fbf8-11df-85bf-af94c592173a" text="Graph B" />
                        <OTText id="909e78db-fbf8-11df-85bf-af94c592173a" text="Graph C" />
                        <OTText id="909e78dc-fbf8-11df-85bf-af94c592173a" text="Graph D" />
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                <OTQuestion id="909e9fed-fbf8-11df-85bf-af94c592173a" name="Trans_9">
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                    <OTText id="909e9fee-fbf8-11df-85bf-af94c592173a" text="9.In a field effect transistor a small change in voltage on the gate makes a big difference in the current between the source and drain. Can you think of a way to use a FET as an amplifier?" />
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                    <OTText id="909e9ff0-fbf8-11df-85bf-af94c592173a" />
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                <OTQuestion id="909ec701-fbf8-11df-85bf-af94c592173a" name="Trans_10">
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                    <OTText id="909ec702-fbf8-11df-85bf-af94c592173a" text="10. In this activity you learned that a field effect transistor can switch on and off 100 billion times per second. That sounds pretty fast, but computer designers would like transistors to run even faster. Can you think of a reason why a FET can't run faster than 100 billion times per second?" />
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                    <OTText id="909ec703-fbf8-11df-85bf-af94c592173a" text="" />
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                    <OTText id="909ec704-fbf8-11df-85bf-af94c592173a" />
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                <OTQuestion id="909eee15-fbf8-11df-85bf-af94c592173a" name="Trans_11">
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                    <OTText id="909eee16-fbf8-11df-85bf-af94c592173a" text="11. According to Newton's famous law, F = ma, it takes a force to accelerate or decelerate anything with mass. Electrons have mass, so it must take a force to turn a current on or off. Where does that force come from in a field effect transistor?" />
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                    <OTText id="909eee17-fbf8-11df-85bf-af94c592173a" text="" />
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                    <OTText id="909eee18-fbf8-11df-85bf-af94c592173a" />
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                <OTQuestion id="909eee19-fbf8-11df-85bf-af94c592173a" name="Trans_12">
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                    <OTText id="909f152a-fbf8-11df-85bf-af94c592173a" text="12. Do you think a regular field effect transistor would work just as well in outer space -- say in a satellite or on the space shuttle? If not, what modifications do you think might have to be made to get it to work in that environment?" />
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                    <OTText id="909f152c-fbf8-11df-85bf-af94c592173a" />
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                <OTQuestion id="909f634d-fbf8-11df-85bf-af94c592173a" name="Trans_13">
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                    <OTText id="909f634e-fbf8-11df-85bf-af94c592173a" text="13. Which of the following about the comparison between a transistor and a light switch is NOT correct?" />
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                        <OTText id="909f6350-fbf8-11df-85bf-af94c592173a" text="They both act to connect or disconnect a circuit." />
                        <OTText id="909f8a61-fbf8-11df-85bf-af94c592173a" text="They use the same mechanism to connect and disconnect a circuit." />
                        <OTText id="909f8a62-fbf8-11df-85bf-af94c592173a" text="A transistor can be used as an amplifier but a switch cannot." />
                        <OTText id="909f8a63-fbf8-11df-85bf-af94c592173a" text="A transistor can be turned on/off much faster than a light switch." />
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