Question: In a Wheatstone bridge, if the battery voltage is increased, what happens to the balance condition?
Options:
It changes
It remains the same
It becomes unstable
It cannot be determined
Correct Answer: It remains the same
Solution:
The balance condition depends on the ratio of resistances, not the voltage.
In a Wheatstone bridge, if the battery voltage is increased, what happens to the
Practice Questions
Q1
In a Wheatstone bridge, if the battery voltage is increased, what happens to the balance condition?
It changes
It remains the same
It becomes unstable
It cannot be determined
Questions & Step-by-Step Solutions
In a Wheatstone bridge, if the battery voltage is increased, what happens to the balance condition?
Step 1: Understand what a Wheatstone bridge is. It is a circuit used to measure unknown resistances by balancing two legs of a bridge circuit.
Step 2: Identify the components of the Wheatstone bridge. It has four resistors (R1, R2, R3, R4) and a battery.
Step 3: Know the balance condition. The bridge is balanced when the ratio of the resistances in one leg equals the ratio in the other leg: R1/R2 = R3/R4.
Step 4: Recognize that the balance condition is based on the ratios of the resistances, not the voltage from the battery.
Step 5: Conclude that if the battery voltage is increased, it does not affect the balance condition because the ratios of the resistances remain the same.
Wheatstone Bridge – A circuit used to measure unknown resistances by balancing two legs of a bridge circuit.
Balance Condition – The condition in which the voltage across the bridge is zero, indicating that the ratio of the resistances in the two legs is equal.
Effect of Voltage on Balance – The balance condition is determined by the ratio of resistances, meaning changes in voltage do not affect the balance.
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