Lab 7

Samuel is working on an electronic project and discovers that the power supply has a short circuit. What should Samuel do before replacing the power supply?

• Disconnect the power supply from the circuit.

• Increase the voltage of the power supply.

• Measure the current through the circuit.

• Connect the load resistor RL.

Maya is working in a lab and needs to set a specific resistance using a resistance substitution box for her experiment. What advice should Maya follow regarding the resistance substitution box?

• Always use the numbers on the box as they are accurate.

• The box should not be used for Thevenin circuits.

• Do not trust the numbers on the box; measure the resistance with a digital ohmmeter.

• Use the box only for AC circuits.

Nora is working on a complex electrical circuit and wants to simplify her analysis. What is the purpose of designing the Thevenin equivalent circuit in this situation?

• To measure the current through the circuit.

• To reduce the number of components in the circuit.

• To increase the power efficiency of the circuit.

• To check that it gives the same values VL as the original circuit.

Rohan is testing a new electronic device and uses the Thevenin equivalent circuit to predict the voltage across a load resistor. However, the measured voltage across the load does not match the prediction from the Thevenin equivalent. What should Rohan do?

• Decrease the voltage of the sources.

• Explain possible reasons for discrepancies.

• Ignore the differences as they are negligible.

• Increase the resistance of the load.

Samuel is working in the electronics lab and needs to replace a faulty power supply. What warning should Samuel keep in mind during this process?

• Always increase the voltage before disconnecting.

• Do not short the power supplies when replacing it with a short circuit.

• Ensure the power supplies are always connected.

• Never use AC power supplies in this lab.

Scarlett is preparing a report for her science project. What should she do with the figures and tables in her report?

• Number them and give them captions (titles).

• Place them at the end of the report.

• Use them only if necessary.

• Include them without any labels.