Question

How will you conclude that the same potential difference (voltage) exists across three resistors connected in a parallel arrangement to a battery?

Answer 1

1. Take three resistors R₁, R₂ and R₃ and connect them in parallel arrangement as shown in the diagram. 
   
2. Connect voltmeter in parallel to measure the potential difference across the combination.
3. Now measure the potential difference across the resistor R₁ by connecting the voltmeter across it. 
   
4. Again, measure the potential difference across the resistor R₂ by connecting the voltmeter across it.
5. Again, measure the potential difference across the resistor R₃ by connecting the voltmeter across it.
6. Tabulate all the readings.

It is observed that potential difference reading will be same in all the three cases. This shows that the same potential difference exists across three resistors connected in parallel arrangement to a battery.