Find the voltage required to ring t

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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bell has a resistance of 16 ohm and requires a 1.5 A current to operate. Find the voltage required to ring the bell when the push button S is pressed.

**Understanding a Basic Electric Circuit**

In the diagram above, we observe a simple electric circuit consisting of several key components. Let’s break down each element and understand its function:

1. **Battery (Voltage Source, V)**:
   - The component represented by a circle with "+" and "-" signs inside denotes the voltage source or battery. This is where the electric potential difference (voltage) is generated, which causes the current (I) to flow through the circuit. The "+" indicates the positive terminal and the "-" indicates the negative terminal.

2. **Resistor (R)**:
   - The rectangle symbol represents a resistor. A resistor restricts the flow of electric current, converting electrical energy into heat. The amount of resistance is measured in ohms (Ω).

3. **Switch (S)**:
   - The two small circles connected by a line depict a switch. When the switch is in the closed position (line connecting the circles), the circuit is complete and current can flow. In the open position (line not connecting the circles), the circuit is incomplete and no current flows.

4. **Current (I)**:
   - The arrow labeled "I" indicates the direction of the conventional current, which flows from the positive terminal of the battery, through the resistor and the switch, and back to the negative terminal of the battery.

### Summary of the Circuit Operation:
- When the switch (S) is closed, the circuit forms a complete path allowing current (I) to flow from the positive terminal of the battery, through the resistor (R), and back to the negative terminal of the battery.
- The resistor (R) impedes the flow of current, creating a voltage drop across it as per Ohm's Law (V = IR).
- When the switch is open, the circuit is broken, current stops flowing, and energy is not dissipated by the resistor.

This basic circuit diagram serves as an excellent introduction to the core principles of electric circuits, including the concepts of voltage, current, resistance, and the role of switches in controlling the flow of electricity.
Transcribed Image Text:**Understanding a Basic Electric Circuit** In the diagram above, we observe a simple electric circuit consisting of several key components. Let’s break down each element and understand its function: 1. **Battery (Voltage Source, V)**: - The component represented by a circle with "+" and "-" signs inside denotes the voltage source or battery. This is where the electric potential difference (voltage) is generated, which causes the current (I) to flow through the circuit. The "+" indicates the positive terminal and the "-" indicates the negative terminal. 2. **Resistor (R)**: - The rectangle symbol represents a resistor. A resistor restricts the flow of electric current, converting electrical energy into heat. The amount of resistance is measured in ohms (Ω). 3. **Switch (S)**: - The two small circles connected by a line depict a switch. When the switch is in the closed position (line connecting the circles), the circuit is complete and current can flow. In the open position (line not connecting the circles), the circuit is incomplete and no current flows. 4. **Current (I)**: - The arrow labeled "I" indicates the direction of the conventional current, which flows from the positive terminal of the battery, through the resistor and the switch, and back to the negative terminal of the battery. ### Summary of the Circuit Operation: - When the switch (S) is closed, the circuit forms a complete path allowing current (I) to flow from the positive terminal of the battery, through the resistor (R), and back to the negative terminal of the battery. - The resistor (R) impedes the flow of current, creating a voltage drop across it as per Ohm's Law (V = IR). - When the switch is open, the circuit is broken, current stops flowing, and energy is not dissipated by the resistor. This basic circuit diagram serves as an excellent introduction to the core principles of electric circuits, including the concepts of voltage, current, resistance, and the role of switches in controlling the flow of electricity.
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