Electricity and Conductivity Kit

Warning: This kit may include small pieces that can be swallowed by small children. Please keep them out of reach of small children. It also needs adult help and supervision for all steps of the project. Please consider necessary safety precautions and send your questions via email to support@MiniScience.com.

Checklist

Please verify the content of your kit. It must include the following items:

Table of content

  1. Make a simple electric circuit.
  2. Can electricity create heat?
  3. Can electricity create magnetism?
  4. What materials are conductive?
  5. What is the effect of parallel light bulbs on the amount of light, consumption of electricity, voltage and electrical currents?
  6. What is the effect of serial light bulbs on the amount of light, consumption of electricity, voltage and electrical currents?
  7. What is the effect of parallel batteries on voltage and electrical currents?
  8. What is the effect of serial batteries on voltage and electrical currents?
About light bulbs or lamps in your kit

You may receive two different types of lamps in your kit. This will help you to expand your experiments and get more results.

Part Number: E0222_1
This type has a tubular bulb with lens and a miniature screw base.

This lamp is designed for 2.25 Volts and at that Voltage the electric current will be about 0.22 Amperes.

Other specifications of this bulb are as follows:

Diameter (in)                                        0.38
Diameter (mm)                                     9.7
Maximum Overall Length (in)                0.94
Maximum Overall Length (mm)             23.9
Average Rated Life (hr)                                    5
Bulb Style                                             TL3

 

Part Number: E0502_1
This type has a Globe shape bulb and a miniature screw base.

This lamp is designed for 5.1 Volts and at that Voltage the electric current will be about 0.15 Amperes.

Other specifications of this bulb are as follows:

Diameter (in)                                        0.59
Diameter (mm)                                     15
Maximum Overall Length (in)                1.06
Maximum Overall Length (mm)             26.92
Average Rated Life (hr)                                    100
Bulb Style                                             G4.5

You may reorder bulbs from MiniScience.com online store.

Make a simple electric circuit.

To make a simple electric circuit, you need the following items:

First, test your battery holder and light bulb. To do this, insert the batteries in the battery holder, screw a bulb in one socket, connect the two lead wires of the battery holder to the two connection screws of the socket. The light should turn on.  Next, prepare the layout that you want to mount your circuit on. The following is a sample:


Mount the battery holder and the bulb socket at the proper location and connect one wire of the battery holder to one connection screw of the light bulb socket. To do this you may need to use an additional piece of wire as an extension.
Then mount two pieces of metal on your board in a way that one will touch the other with a little push. This will serve as your switch.
Use two more pieces of wire to connect one end of your switch to the available connection screw on the bulb socket and connect the other end of switch to the available wire of the battery holder.
Your basic electric circuit is ready now and you can connect the bulb and test your circuit by pushing the switch.

Electricity and Conductivity Kit (Continued…)

Can electricity create heat?

Connect two poles of a battery by a thin wire.  What happens?
The wire gets hot.

Heat is generated since electrons cannot easily move from one end of the thin wire to the other end. This is why there is a thin wire known as a filament inside the light bulb. In the light bulb, the thin wire (filament) becomes so hot that it glows.

For better results you may use a battery set to create more heat. A Battery set is a battery holder with two or more batteries in the holder. Batteries in a battery holder are connected in a serial form to create more pressure (more voltage).

Test to see if you can use such heat to cut Styrofoam cups.

Can electricity create magnet?

Get some magnet wire and wrap it around a nail. Connect the two ends of the wire to the battery set. Use some paper clips to see if your nail is magnetized. What you have made is an electromagnet.

Magnet wire is a regular copper wire with a thin coating of an insulating material. You need to remove the coating from both ends of your wire in order to create a good contact with your connection wires. The coating of magnetic wire is a special type of resin that can be removed by scratching with a sharp object or sand paper. You should get a good result if you have wrapped your magnet wire about 20 times around the nail.

Now use a compass or another magnet with marked poles. Test to see which side of the nail is the North Pole and which side is the South Pole of your magnet. Switch the battery poles and see if it affects the North/South Poles of your magnet. You can also change the direction of the wrapping of the wire to see the effect of that on North and South Poles of your electromagnet.

 

What materials are conductive?

Modify your basic electric circuit by removing the switch and replacing it with a pair of long wires (about two feet each). You could also keep the switch in open position and just add a pair of wires like this picture.

Now let these wires touch each other. The light should turn on. What you have made is a continuity tester or conductivity tester. You can test different objects for conductivity by connecting these wires at the same time to two different spots of that object. Those who turn on the light are conductive and others are not. Repeat this experiment with objects around you such as coins, wood, plastic, glass, water and salt water, lead of a pencil, aluminum foil and etc. Write the results in a table.

What is the effect of parallel light bulbs on the amount of light, consumption of electricity, voltage and electrical currents?

Re assemble your basic electric circuit with two light bulbs parallel to each other, like this picture:

Now do the following experiments and report the results. You may also compare the results with the results of next experiment where two light bulbs are connected in series.

  1. Install both bulbs and test the circuit. Both lights must turn on.
  2. Remove one of the light bulbs. What is the effect on the other one?
  3. What is the effect of parallel bulbs on battery life?
  4. What is the effect of parallel bulbs on voltage and electric current? You may estimate these effects by the amount of light emitted by each bulb. (More light indicates more electric current that is caused by more voltage)

What is the effect of serial light bulbs on the amount of light, consumption of electricity, voltage and electrical currents?

Re assemble your basic electric circuit with two light bulbs in series, like this picture:

Now do the following experiments and report the results. You may also compare the results with the results of previous experiment where two light bulbs are connected in parallel form.

  1. Install both bulbs and test the circuit. Both lights must turn on.
  2. Remove one of the light bulbs. What is the effect on the other one?
  3. What is the effect of parallel bulbs on battery life?
  4. What is the effect of parallel bulbs on voltage and electric current? You may estimate these effects by the amount of light emitted by each bulb. (More light indicates more electric current that is usually caused by more voltage)

What is the effect of parallel batteries on voltage and electrical currents?

Before starting this experiment you need to know the following facts.

  1. Each battery cell is 1.5 Volts. Battery holders connect two or more batteries in series to achieve a higher voltage. For example a two cell battery holder will be equivalent to a 3 volts battery. Also a 4 Cell battery holder will be equivalent to a 6 Volts energy source.
  2. In experiments related to parallel or serial batteries, you can connect battery holders in that format, and think of each battery holder as a larger battery.

Re assemble your electric circuit with one light bulb and two parallel batteries (or battery holders). Picture below:

Now do the following experiments and report the results. You may also compare the results with the results of next experiment where two battery holders are connected in serial form.

  1. Install both batteries and test the circuit. Light must turn on.
  2. Remove one battery holder. What is the effect on the light?
  3. What is the effect of parallel batteries on battery life?
  4. What is the effect of parallel batteries on voltage and electric current? You may estimate these effects by the amount of light emitted by the bulb. (More light indicates more electric current that is usually caused by more voltage)

What is the effect of serial batteries on voltage and electrical currents?

Re assemble your electric circuit with one light bulb and two serial batteries (or battery holders). Picture below:

Now do the following experiments and report the results. You may also compare the results with the results of previous experiment where two battery holders are connected in parallel form.

  1. Install both batteries and test the circuit. Light must turn on.
  2. Remove one battery holder. What is the effect on the light?
  3. What is the effect of serial batteries on battery life?
  4. What is the effect of serial batteries on voltage and electric current? You may estimate these effects by the amount of light emitted by the bulb. (More light indicates more electric current that is usually caused by more voltage)

Give us a feedback!

This experiment or project sheet is supposed to be plain and understandable by all ages that may want to try and learn about electric circuits. Please let us know how we can improve it. Forward your suggestions or questions to info@MiniScience.com