What is the primary use of a Wheatstone bridge in practical applications?
Practice Questions
1 question
Q1
What is the primary use of a Wheatstone bridge in practical applications?
To measure voltage
To measure current
To measure resistance
To measure power
The primary use of a Wheatstone bridge is to measure unknown resistances by balancing it against known resistances.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the primary use of a Wheatstone bridge in practical applications?
Solution: The primary use of a Wheatstone bridge is to measure unknown resistances by balancing it against known resistances.
Steps: 7
Step 1: Understand that a Wheatstone bridge is a circuit used to measure electrical resistance.
Step 2: Know that it consists of four resistors arranged in a diamond shape.
Step 3: Recognize that two of the resistors have known values (these are the reference resistors).
Step 4: Identify that one resistor has an unknown value (this is the resistor we want to measure).
Step 5: Learn that the bridge is balanced when the ratio of the known resistors is equal to the ratio of the unknown resistor and the other known resistor.
Step 6: Use a galvanometer to detect when the bridge is balanced (when there is no current flowing through it).
Step 7: Calculate the unknown resistance using the known values and the balanced condition of the bridge.
