Measurement of Capacitance by Schering Bridge Problem no 2

TL;DR

This video explains how to measure the relative permittivity of a specimen using a low voltage shearing bridge.

Transcript

hello friends in this video we are going to solve a problem on the measurement of capacitance using shearing bridge so let us start with our problem so our problem is we are given a low voltage sharing bridge and this bridge is used for the measurement of the permittivity of a sheet and in this bridge the arm a b it consists of two electrodes betwe... Read More

Key Insights

• 😘 A low voltage shearing bridge is used to measure the relative permittivity of a specimen.
• 🦾 The balance equation for the shearing bridge is derived by equating the product of admittances in opposite arms.
• ⚖️ The capacitance value can be calculated by solving the balance equations and substituting known resistor and capacitor values.

Questions & Answers

Q: What is the purpose of a shearing bridge in capacitance measurement?

A shearing bridge is used to measure the relative permittivity of a specimen by establishing balance conditions in the circuit.

Q: How is the balance equation derived for the shearing bridge?

The balance equation is derived by equating the product of admittances in one pair of arms to the product of admittances in the other pair of arms.

Q: How can the value of capacitance be calculated using the shearing bridge?

By solving the derived balance equations and substituting known values of resistors and capacitors, the capacitance value can be calculated.

Q: What does the relative permittivity represent in the measurement of capacitance?

The relative permittivity represents the ability of a material to store electrical energy compared to the free space between the electrodes.

Summary & Key Takeaways

• The video discusses a problem related to the measurement of capacitance using a shearing bridge.

• The low voltage shearing bridge consists of four arms, each containing resistors and capacitors.

• By analyzing the balance equations and given values, the video explains how to calculate the relative permittivity of the specimen.