If the resistances in a Wheatstone bridge are equal, what is the potential diffe
Practice Questions
Q1
If the resistances in a Wheatstone bridge are equal, what is the potential difference across the galvanometer?
Zero
Equal to the supply voltage
Half of the supply voltage
Depends on the resistances
Questions & Step-by-Step Solutions
If the resistances in a Wheatstone bridge are equal, what is the potential difference across the galvanometer?
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 galvanometer.
Step 3: Recognize that if the resistances are equal, it means R1 = R2 and R3 = R4.
Step 4: When the resistances are equal, the bridge is balanced. This means that the voltage across the galvanometer is the same on both sides.
Step 5: Since the voltage is the same on both sides, there is no difference in potential, which means the potential difference across the galvanometer is zero.
