IMathAS-libretexts

A student is given a box of identical lightbulbs and is asked to design a procedure to determine if the lightbulbs are ohmic or nonohmic. The student plans to connect the circuit shown above and use the meters to measure a potential difference and current.

Do the results of the experiment depend on whether the power source has some internal resistance, and why or why not?

No, because the resistor in the circuit ensures that the correct current is delivered to the lightbulb.
Yes, because the current in the circuit depends on the total resistance of the circuit.
Yes, because the emf provided by the power source will be different if it has internal resistance.
No, because the measurements apply to the lightbulb only.

License