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.
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.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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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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