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Science · Drill 30

Science practice 30

15 questions ~9 min recommended
⏱ 00:00
Score
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I appreciate the detailed instruction, but I need to clarify: the input you've provided is a **data table/figure with multiple-choice questions**, not a prose passage with underlined text and embedded question markers. The standard ACT English format that I'm designed to handle involves: - Narrative or expository prose text - Inline question markers (standalone digits) embedded within that text - Underlined portions corresponding to those markers Your input appears to be from an **ACT Science test** (showing experimental data tables) rather than an **ACT English test**. Science passages don't follow the underline-and-embed format—instead, questions refer to specific table rows, figure elements, or data points by reference. **To proceed, I would need:** 1. Confirmation this is meant to be rendered as HTML (if so, I'd output the tables + questions as-is without the underline formatting, since there's no prose to mark up) 2. OR, the original ACT English passage text if this was provided by mistake Could you clarify what format you'd like the output in, or provide the actual prose passage if this is an English test question?

Every time a lightbulb is switched on, an electrical circuit is formed. When plugged into outlets that provide a certain voltage, current begins to flow through the bulbs. Current depends on the resistance of the bulb and the voltage of the power supply. The power output of a bulb is a measure of the amount of energy the bulb requires each second. Power is calculated by multiplying current and voltage. Table 9.3 contains data that relate these variables for a basic circuit consisting of one lightbulb and a power supply.

TABLE 9.3

Figure 9.2 shows three configurations of bulbs. When the bulbs are connected in series, they form one path to the power supply. If any bulb in the pathway breaks, all the lights go out because the circuit is no longer complete. In contrast, bulbs connected in parallel are all independently connected to the power supply-in essence, forming their own circuits. Bulbs wired in parallel across a power supply continue to work even when one bulb goes out because each branch forms an independent circuit.

Figure 9.2

Table 9.4 shows how the number of bulbs in series and parallel affect the current and power values. It gives data for 240-ohm bulbs connected to a 120-V power supply.

TABLE 9.4

1. Based on the data in Table 9.3, describe the relationship between current, voltage, and resistance.

2. Using information provided in the passage, determine the power output of a 50.0-ohm bulb connected to a 150-V socket that has 3.0 A flowing through it.

3. For a fixed voltage, what happens to the power output of a bulb when its resistance triples?

4. For a bulb with a given resistance, what happens to the flow of current through the bulb when the voltage of the power supply doubles?

5. A 480-ohm bulb is screwed into a 120-V socket. How much energy does it need to stay lit for four hours?

6. Predict the power required to operate a 600-ohm light bulb when it is plugged into a 120-V outlet.

7. According to Tables 9.3 and 9.4, when a fifth bulb is added to a parallel circuit, each bulb will:

8. When a fifth bulb is added to a series circuit, how will the bulb's power output compare to that of a bulb in a four-bulb series circuit?

9. According to the information in Tables 9.3 and 9.4, adding an additional bulb to a parallel circuit:

10. The circuit in Figure 9.3 shows Bulbs 2 and 3 wired in parallel. That combination is wired in series with Bulb 1 and the battery. Which of the following statements is FALSE?


Figure 9.3

11. As bulbs are added to a parallel circuit:

12. A child noticed that five bulbs in her electric toy went out simultaneously, but four other bulbs remained lit. What is the most likely circuit arrangement in the toy?

13. Adding additional bulbs to a series circuit:

14. A watt (W) of power is the total joules (J) of electrical energy transferred by a circuit element each second. Given a circuit with three 240-ohm bulbs wired in series to a 120-V power supply, how much energy is transferred by the circuit if it operates for 10 seconds?

15. How much power does a parallel circuit require if it has six 240-ohm resistors connected to a 120-V power supply?

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