Ohm's Law


Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points. Introducing the constant of proportionality, the resistance, one arrives at the usual mathematical equation that describes this relationship as:

      I = Current
     V = Voltage
      R = Resistance
( You can also manipulate the derivation to find each of the function )

The law was named after the German physicist Georg Ohm, who, in a treatise published in 1827.

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Parallel Circuit

parallel circuit is called parallel because the component such as resistor or lamp are connected multiple (parallel) paths to move along . Charges can move through any of several paths. If one of the items in the circuit is broken then no charge will move through that path, but other paths will continue to have charges flow through them. Parallel circuits are found in most household electrical wiring. This is done so that lights don't stop working just because you turned your TV off.


1. Current

2. Voltage

3. Resistor
Example of Parallel Circuit

Click Here to download Series Circuit experiment Labsheet

Series Circuit

Series circuit is a circuit where all the components or load are all connected with series connection.
In a series circuit, the current through each of the components is the same, and the voltage across the components is the sum of the voltages across each component.

1. Current

2. Voltage

3. Resistor

Example of Series Circuit

OBJECTIVES : After performing this experiment, the students will be able to:
                            i) Measure resistance from the circuits.
                            ii) Measure current from the circuits.
                            iii) Measure voltages from the circuits.

MATERIALS / :        i) Power Supply 9V.
APPARATUS            ii) Multimeter.
                                   iii) Project Board.
                                   iv) Jumper
                                    v) Resistors R1 = 2.2kΩ
                                                       R2 = 470Ω
                                                       R3 = 3.3KΩ

Click Here to download Series Circuit experiment Labsheet



A multimeter or a multitester, also known as a VOM (Volt-Ohm meter). Multimeter can be use to measure voltage, current and resistance. Multimeters may use analog or digital circuits.

Example of Analog multimeter

Example of Digital Multimeter

Click Here to download Multimeter experiment


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