Question

Write an activity to prove that the sum of the potential differences of the bulb is equal to voltage across the combination of the resistors. 

(OR) 

Prove that during series connection potential difference is distributed among the resistors experimentally.

Answer 1

Aim:

To prove that the sum of the potential differences of the bulbs is equal to potential difference across the combination of the resistors. 

Materials required : 

1. Bulbs 

2. Voltmeters 

3. Insulated wires 

4. Ammeter 

5. Key

Procedure :

1. Take different bulbs. Using a multimeter measure their resistances. Note them as R₁, R₂ and R_v 

2. Connect them as shown in figure. 

3. Measure the voltage between terminals of the battery connected to the circuit. 

4. Measure the voltages between the ends of each bulb and note them as V₁, V₂ and V₃ from voltmeters in your notebook.

 5. Compare them.

Observation : 

We notice that the sum of the voltages of the bulbs is equal to voltages across the combination of the resistors.