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A temperature sensitive resistor (thermistor) is used in a Bridge circuit for the measurement of the temperature of a water bath as shown in the fig below. The temperature is indicated on the ammeter M, which has a sensitivity of 50microA at full-scale deflection and a resistance of 300 Ohms. A 4 V battery, of negligible internal resistance, is used to energize the bridge. The thermistor has a resistance of 1000 Ohms at a water temperature of 50 °C and its resistance decreases by 5% for each degree increase in temperature. Find the value of the resistance to which R4 must be set to give zero reading on meter M when the temperature of the bath is 50 °C. Enter your numerical value in units of Ohms. C R 1 (1000) S =4VI (M) (300) R, (750) R ₂ (Thermistor)

A temperature sensitive resistor (thermistor) is used in a Bridge circuit for the measurement of the temperature of a water bath as shown in the fig below. The temperature is indicated on the ammeter M, which has a sensitivity of 50microA at full-scale deflection and a resistance of 300 Ohms. A 4 V battery, of negligible internal resistance, is used to energize the bridge. The thermistor has a resistance of 1000 Ohms at a water temperature of 50 °C and its resistance decreases by 5% for each degree increase in temperature. Find the value of the resistance to which R4 must be set to give zero reading on meter M when the temperature of the bath is 50 °C. Enter your numerical value in units of Ohms. C R 1 (1000) S =4VI (M) (300) R, (750) R ₂ (Thermistor)

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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A temperature sensitive resistor (thermistor) is used in a Bridge circuit for the measurement of the temperature of a water bath as shown in the fig below. The temperature is indicated on the ammeter M, which has a sensitivity of 50microA at full-scale deflection and a resistance of 300 Ohms. A 4 V battery, of negligible internal resistance, is used to energize the bridge. The thermistor has a resistance of 1000 Ohms at a water temperature of 50 °C and its resistance decreases by 5% for each degree increase in temperature. Find the value of the resistance to which R4 must be set to give zero reading on meter M when the temperature of the bath is 50 °C. Enter your numerical value in units of Ohms. Show all work
A temperature sensitive resistor (thermistor) is used in a Bridge circuit for the measurement of the temperature of a water bath as shown in the fig below. The temperature is indicated on the ammeter M, which has a sensitivity of 50microA at full-scale deflection and a resistance of 300 Ohms. A 4 V battery, of negligible internal resistance, is used to energize the bridge. The thermistor has a resistance of 1000 Ohms at a water temperature of 50 °C and its resistance decreases by 5% for each degree increase in temperature. Find the value of the resistance to which R4 must be set to give zero reading on meter M when the temperature of the bath is 50 °C. Enter your numerical value in units of Ohms. C R 1 (1000) S =4VI (M) (300) R, (750) R ₂ (Thermistor)
Transcribed Image Text:A temperature sensitive resistor (thermistor) is used in a Bridge circuit for the measurement of the temperature of a water bath as shown in the fig below. The temperature is indicated on the ammeter M, which has a sensitivity of 50microA at full-scale deflection and a resistance of 300 Ohms. A 4 V battery, of negligible internal resistance, is used to energize the bridge. The thermistor has a resistance of 1000 Ohms at a water temperature of 50 °C and its resistance decreases by 5% for each degree increase in temperature. Find the value of the resistance to which R4 must be set to give zero reading on meter M when the temperature of the bath is 50 °C. Enter your numerical value in units of Ohms. C R 1 (1000) S =4VI (M) (300) R, (750) R ₂ (Thermistor)
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