Investigating Wire Resistance Experiment

The video tutorial demonstrates an experiment to investigate the relationship between the length of a wire and its resistance. Using a constantine wire attached to a meter ruler, the instructor sets up a simple circuit with a power supply, ammeter, and voltmeter. The circuit is used to measure current and potential difference across varying lengths of wire. The experiment involves recording data at different wire lengths and analyzing the results to understand the relationship between resistance and length.

What is the name of the wire used in the experiment?

• Copper

• Aluminum

• Constantine

• Silver

What is the voltage of the battery used in the circuit?

• 12 volts

• 3 volts

• 6 volts

• 9 volts

Which instrument is used to measure the current in the circuit?

• Barometer

• Thermometer

• Ammeter

• Voltmeter

How is the voltmeter connected in the circuit?

• In series

• In parallel

• Diagonally

• Perpendicularly

What is the purpose of using crocodile clips in the experiment?

• To decrease current

• To increase resistance

• To connect different lengths of wire

• To measure voltage

At what length does the experiment start measuring resistance?

• 5 cm

• 10 cm

• 20 cm

• 15 cm

Why is it important not to leave the circuit on for too long?

• To prevent overheating

• To save battery

• To avoid electric shock

• To reduce wire length

What is the final length of wire measured in the experiment?

• 50 cm

• 60 cm

• 55 cm

• 65 cm

What two quantities are plotted on the graph to analyze the experiment?

• Current and length

• Resistance and length

• Voltage and resistance

• Voltage and current

What is the main objective of the experiment?

• To find the best wire material

• To test different power supplies

• To measure the voltage of a battery

• To investigate the relationship between wire length and resistance