Hi,
I am helping my niece with homework, she has to simulate the Ohm's law circuit. Basically a simple circuit with LED, resistor, and power source.
she can use any online simulation tool but it has to show the voltage drop across each component and prove that ohms law is being applied

The closest online ohms law tool i can find online is https://circuitdigest.com/calculators/ohms-law-calculator



But the simulartion value does not seem to change in this tool while change the voltage and resistor value. Can anyone point me towards the right tool?

 

Hi job,
The Amp meter in your simulation has zero resistance, so the voltage across the R1 and R2 resistors will always be 12V.

Try using two resistors in Series, add a resistor to the amp meter path.

E

 

I don’t see any problems with your simulation except set the ammeter to show mA instead of A.

Use this Ohm’s Law formula,
I = V / R

 

But the simulartion value does not seem to change in this tool while change the voltage and resistor value.

Hi,
There is a problem with his set-up if, as he says, he is measuring voltage.
E

 

The instructions appear to require the use of an LED in the circuit, yet I don't see one.

 

Ohm's Law states that the current I through a resistance R is proportional to the voltage V across the resistor and inversely proportional to the resistance.

Stated mathematically,
I = V / R

I is the dependent variable.
V and R are independent variables.

V = I x R
is a corollary of Ohm's Law.

 

But the simulartion value does not seem to change in this tool while change the voltage and resistor value.

The current value changes, as shown by the Ammeter readings.

 

Yes, the circuit demonstrates Ohm’s law. Why someone thought an LED was of any use in doing so is beyond me.

The voltage does not change because the voltage you are measuring with that setup is the battery voltage.

 

Add an LED and another resistor in series.
Measure the current and the voltage across all the components.

 

Don't expect the LED to follow Ohms law.