In a Wheatstone bridge, if the battery voltage is 12V and the resistances are eq

₹0.0

Question: In a Wheatstone bridge, if the battery voltage is 12V and the resistances are equal, what is the voltage across the galvanometer?

Options:

Correct Answer: 0V

Solution:

With equal resistances, the voltage across the galvanometer is 0V.

In a Wheatstone bridge, if the battery voltage is 12V and the resistances are equal, what is the voltage across the galvanometer?

In a Wheatstone bridge, if the battery voltage is 12V and the resistances are equal, what is the voltage across the galvanometer?

Step 1: Understand that a Wheatstone bridge consists of four resistors arranged in a diamond shape with a battery connected across one diagonal and a galvanometer across the other diagonal.
Step 2: Recognize that when the resistances are equal, the bridge is balanced.
Step 3: When the bridge is balanced, the voltage across the galvanometer is zero because there is no potential difference to cause current to flow through it.
Step 4: Since the battery voltage is 12V, it is divided equally across the two branches of the bridge, but this does not affect the galvanometer reading when the resistances are equal.

Wheatstone Bridge – A circuit used to measure unknown resistances by balancing two legs of a bridge circuit.
Galvanometer Voltage – In a balanced Wheatstone bridge (equal resistances), the voltage across the galvanometer is zero.