If the resistances in a Wheatstone bridge are equal, what is the potential difference across the galvanometer?
Practice Questions
1 question
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
If the resistances are equal, the potential difference across the galvanometer is zero.
Questions & Step-by-step Solutions
1 item
Q
Q: If the resistances in a Wheatstone bridge are equal, what is the potential difference across the galvanometer?
Solution: If the resistances are equal, the potential difference across the galvanometer is zero.
Steps: 5
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.
