Question 1 of 10
What is the primary function of a Wheatstone bridge?
The Wheatstone bridge is specifically designed to accurately determine the value of an unknown resistance.
Question 2 of 10
Who is credited with developing the Wheatstone bridge to its modern form?
Sir Charles Wheatstone is credited with the development and popularization of the Wheatstone bridge.
Question 3 of 10
In a balanced Wheatstone bridge, what is the voltage difference between points C and D?
In a balanced bridge, the potential at points C and D is equal, resulting in zero voltage difference.
Question 4 of 10
What is the key component used in a Wheatstone bridge to achieve balance?
A variable resistor (rheostat) is adjusted until the bridge is balanced.
Question 5 of 10
What is the formula used to calculate the unknown resistance (Rx) in a balanced Wheatstone bridge?
The formula Rx = (R2 / R1) * R3 allows you to calculate the unknown resistance when the bridge is balanced.
Question 6 of 10
What instrument is typically used to detect the balance point in a Wheatstone bridge?
A galvanometer is used to detect the null point, indicating a balanced bridge (zero current).
Question 7 of 10
Which of the following is NOT an application of the Wheatstone bridge mentioned in the text?
The article mentions applications related to light, strain, and pressure, but not inductance.
Question 8 of 10
What is the shape formed by the resistors in a Wheatstone bridge circuit?
The resistors are arranged in a diamond shape.
Question 9 of 10
What happens when the Wheatstone bridge is unbalanced?
In an unbalanced bridge, current flows through the galvanometer, indicating a potential difference.
Question 10 of 10
In the example, if R1=50 ohms, R2=100 ohms, and R3=40 ohms, what is the value of R4 that balances the bridge?
Using the formula R4 = (R2 / R1) * R3 = (100/50)*40 = 80 ohms.
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