Using a Multimeter

In this short lab the goal was to demonstrate that we know how to use a multimeter properly. i.e. we wouldn't burn the fuse :(.
we were supposed to create the following simple circuit and measure everything. Everything includes currents resistance values and voltage drops across elements.

But first to refresh our memory on how to measure resistance values we chose 4 different resistors and determined their values by reading the colors then measuring them.

Then we measured the value for an unregulated 12V DC adapter which came out to be about 16.9V. The number makes sense since the 12V labeled on the power supply means the company guarantees a minimum of 12 volts.

Then we constructed the circuit shown at the beginning.

The obtained values from measuring the current in series and voltage in parallel are as follow:

The reason that the total voltage does not equal to 5V is the fact that the wires used to construct the circuit have some low resistance as well. In this case about 10 ohm. However wires contribute the most in error we cannot assume that they are the only source since the actual value for resistors are slightly different than the measured value from the multimeter.

Overal now we can say we are able to measure current, voltage and resistance in circuit elements which is a very important tool in this course :).