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for the network below, the circuit is nulled at 72°F. Let R has sensitivity of +255/°F. 12V + 15 Ω Rc 1- Find the resistor value R 2- Find the voltage as if the temperature is 80 °F. Va 15 Ω V₁ + RT

for the network below, the circuit is nulled at 72°F. Let R has sensitivity of +255/°F. 12V + 15 Ω Rc 1- Find the resistor value R 2- Find the voltage as if the temperature is 80 °F. Va 15 Ω V₁ + RT

Introductory Circuit Analysis (13th Edition)
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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**Transcription:** For the network below, the circuit is nulled at 72°F. Let \( R_T \) have a sensitivity of \( +25 \Omega/°F \). **Circuit Description:** - A 12V battery is connected to a bridge circuit. - The bridge consists of four components: a 0.15Ω resistor, a 15Ω resistor, a variable resistor labeled \( R_C \), and a temperature-sensitive resistor labeled \( R_T \). - The bridge has two voltage points indicated as \( V_a \) and \( V_b \), located across the diagonal of the circuit from each other. **Tasks:** 1. Find the resistor value \( R_C \). 2. Find the voltage \( V_{ab} \) if the temperature is 80°F. **Diagram:** The diagram shows a Wheatstone bridge configuration with four resistive elements: - Top left: 0.15Ω resistor. - Top right: 15Ω resistor. - Bottom left: Resistor labeled \( R_C \). - Bottom right: Temperature-sensitive resistor labeled \( R_T \). The bridge is powered by a 12V battery on the left side. The voltages \( V_a \) and \( V_b \) are measured across the diagonal between the intersection points of these two branches.
Transcribed Image Text:**Transcription:** For the network below, the circuit is nulled at 72°F. Let \( R_T \) have a sensitivity of \( +25 \Omega/°F \). **Circuit Description:** - A 12V battery is connected to a bridge circuit. - The bridge consists of four components: a 0.15Ω resistor, a 15Ω resistor, a variable resistor labeled \( R_C \), and a temperature-sensitive resistor labeled \( R_T \). - The bridge has two voltage points indicated as \( V_a \) and \( V_b \), located across the diagonal of the circuit from each other. **Tasks:** 1. Find the resistor value \( R_C \). 2. Find the voltage \( V_{ab} \) if the temperature is 80°F. **Diagram:** The diagram shows a Wheatstone bridge configuration with four resistive elements: - Top left: 0.15Ω resistor. - Top right: 15Ω resistor. - Bottom left: Resistor labeled \( R_C \). - Bottom right: Temperature-sensitive resistor labeled \( R_T \). The bridge is powered by a 12V battery on the left side. The voltages \( V_a \) and \( V_b \) are measured across the diagonal between the intersection points of these two branches.
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