## Simple Electrical Circuits Lab Report

## Question

Can Ohm's Law effectively predict current, resistance and potential difference in a circuit with a resistor, an LED and a push button?

## Hypothesis

I think that if given the other two parts of the Ohm's Law equation, it is possible to calculate the remaining one by using basic algebra skills. I believe that it may not be exact because it does not take into account all of the friction other than the resistors and there are other variables that are unaccounted for.

## Materials and Methods

The materials that I used for this experiment were:

9v Battery

Bread Board

Bread Board Connection Wires

Resistor

LED Light

Multimeter

We took the bread board and put the connection wires, resistor, and LED light on it in a fashion that formed a circuit. We then added the battery and lit up the light. Using the multimeter we attempted to measure the Ohms through the circuit, and the voltage, and the amperage.

9v Battery

Bread Board

Bread Board Connection Wires

Resistor

LED Light

Multimeter

We took the bread board and put the connection wires, resistor, and LED light on it in a fashion that formed a circuit. We then added the battery and lit up the light. Using the multimeter we attempted to measure the Ohms through the circuit, and the voltage, and the amperage.

## Results

After setting up the circuit with all of the correct parts, we tried to take the measurements with the multimeter. We were able to measure the voltage and Ohm's semi-accurately but were unable to even get a reading or current.

## Conclusions

This experiment was designed to determine if Ohm's Law can effectively predict current, resistance, and potential difference in a circuit with a resistor, an LED and a push button. I thought that it would be possible to use Ohm's Law and basic algebra to determine the different parts. My hypothesis was correct in that if you have two parts of the equation you can solve for the third using algebra. There were many things that didn't work. For example the multimeters that we had accessible to us were not sensitive enough to measure current. We could improve the experiment greatly by getting a more sensitive multimeter. Overall it turned out to be an interesting experiment that I had a good time doing.