A. Set up a circuit with a battery, a single bulb, and a switch, as shown. Observe the brightness of bulb A. A We will consider bulb A to be our indicator bulb.

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## Understanding Series Circuits and Bulb Brightness

This educational activity guides students through exploring the behavior of light bulbs in a series circuit. 

### Part A

**Objective**: Set up a basic series circuit and observe the brightness of a single bulb.

- **Instructions**:
  1. Connect a battery, a single bulb labeled as 'A,' and a switch as shown in the diagram.
  2. Close the switch to complete the circuit and observe the brightness of bulb A.

**Diagram**: The circuit diagram shows a battery connected in series with a single bulb and a switch.

### Part B

**Objective**: Understand the impact on the brightness of bulb A when another identical bulb is added in series.

- **Instructions**:
  1. Add another bulb, labeled as 'B', in series to the existing circuit.
  2. Close the switch and observe the brightness of bulb A again.

**Diagram**: The circuit diagram shows a battery connected in series with two bulbs (A and B) and a switch.

**Question**: Would you expect the brightness of bulb A to change when bulb B is added to the series circuit? How does the brightness of bulb A change, if at all, when another bulb is added to the circuit in series with it?

### Part C

**Objective**: Analyze the effect on bulb A’s brightness when a third identical bulb is added in series.

- **Instructions**:
  1. Add a third bulb, labeled as 'C,' in series to the existing circuit.
  2. Close the switch and observe the brightness of bulb A once more.

**Diagram**: The circuit diagram shows a battery connected in series with three bulbs (A, B, and C) and a switch.

**Question**: Would you expect the brightness of bulb A to change when a third bulb is added to the series circuit?

### Explanation of Diagrams

Each diagram represents the electrical circuit described in the instructions:

- **Diagram A**: A simple circuit with one bulb connected in series with a battery and a switch.
- **Diagram B**: A circuit with two bulbs connected in series with a battery and a switch.
- **Diagram C**: A circuit with three bulbs connected in series with a battery and a switch.

In series circuits, as more bulbs are added, the total resistance in the circuit increases, resulting in a decrease in the current. This decrease in current generally causes the
Transcribed Image Text:## Understanding Series Circuits and Bulb Brightness This educational activity guides students through exploring the behavior of light bulbs in a series circuit. ### Part A **Objective**: Set up a basic series circuit and observe the brightness of a single bulb. - **Instructions**: 1. Connect a battery, a single bulb labeled as 'A,' and a switch as shown in the diagram. 2. Close the switch to complete the circuit and observe the brightness of bulb A. **Diagram**: The circuit diagram shows a battery connected in series with a single bulb and a switch. ### Part B **Objective**: Understand the impact on the brightness of bulb A when another identical bulb is added in series. - **Instructions**: 1. Add another bulb, labeled as 'B', in series to the existing circuit. 2. Close the switch and observe the brightness of bulb A again. **Diagram**: The circuit diagram shows a battery connected in series with two bulbs (A and B) and a switch. **Question**: Would you expect the brightness of bulb A to change when bulb B is added to the series circuit? How does the brightness of bulb A change, if at all, when another bulb is added to the circuit in series with it? ### Part C **Objective**: Analyze the effect on bulb A’s brightness when a third identical bulb is added in series. - **Instructions**: 1. Add a third bulb, labeled as 'C,' in series to the existing circuit. 2. Close the switch and observe the brightness of bulb A once more. **Diagram**: The circuit diagram shows a battery connected in series with three bulbs (A, B, and C) and a switch. **Question**: Would you expect the brightness of bulb A to change when a third bulb is added to the series circuit? ### Explanation of Diagrams Each diagram represents the electrical circuit described in the instructions: - **Diagram A**: A simple circuit with one bulb connected in series with a battery and a switch. - **Diagram B**: A circuit with two bulbs connected in series with a battery and a switch. - **Diagram C**: A circuit with three bulbs connected in series with a battery and a switch. In series circuits, as more bulbs are added, the total resistance in the circuit increases, resulting in a decrease in the current. This decrease in current generally causes the
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