IB MYP Integrated Sciences e-Assessment : Electric circuits Exam Style Practice Questions - New Syllabus
Question (3 marks)
A student wants to investigate the relationship between voltage (V) and current (I) modelled by the formula $\text{V=IR}$ where $\text{R= resistance}$. He uses the setup below to determine the resistance of a copper wire.
Use the tool to draw a circuit diagram of the equipment above.
▶️Answer/Explanation
Ans:
Power Supply: The DC power supply is the source of electrical energy.
Ammeter: The ammeter is connected in series with the copper wire to measure the current flowing through it.
Switch: The switch is also in series and controls the flow of current.
Resistor (Copper Wire): The copper wire is the component whose resistance is being measured.
Voltmeter: The voltmeter is connected in parallel across the copper wire to measure the voltage drop across it.