Potentiometer and Internal Resistance Quiz

What is the purpose of using a galvanometer in the initial setup of the experiment?

• To measure the voltage across the cell

• To measure the current flowing through the circuit

• To check the correctness of the circuit connections

• To adjust the resistance in the circuit

What is the first step after inserting the oneway key K1 in the experiment?

• Note the ammeter reading

• Slide the jockey over the wire

• Insert the key K2

• Adjust the resistance box

How is the balancing length L1 determined in the experiment?

• By measuring the voltage across the cell

• By adjusting the resistance box to a specific value

• By sliding the jockey over the wire until the galvanometer shows zero deflection

• By inserting key K2 and measuring the length

What happens to the internal resistance of a cell as the external resistance increases?

• It remains constant

• It fluctuates randomly

• It decreases

• It increases

What is the average internal resistance of the given primary cell as found in the experiment?

• 0.5 ohm

• 1 ohm

• 2502 ohm

• 500 ohm