In a Wheatstone bridge, if the battery voltage is 12V and the resistances are eq
Practice Questions
Q1
In a Wheatstone bridge, if the battery voltage is 12V and the resistances are equal, what is the voltage across the galvanometer?
0V
6V
12V
3V
Questions & Step-by-Step Solutions
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.
