What is an electric circuit? It is a complete conducting loop that provides a path for the flow of electric charges (or electrons). As shown in Figure 1 below, [sociallocker id=”8247″] the battery, switch, resistor and the wire form a closed loop, thus creating a path for current (or electron) to flow. Figure 2 shows the actual connection of the components that make up a simple electric circuit.

Figure 1

Figure 2

[/sociallocker] What follows after a good understanding of electric circuit is Ohm’s law. Ohm’s law is stated as follows:

V = IR

where V = voltage, I = current, and R = resistance.

Ohm’s law allows you to determine the characteristics of a circuit, such as how much current is flowing through it, if you know the voltage of the battery in the circuit and how much resistance is in the circuit.

Define Ohm’s Law: Ohm’s Law states that the current flowing in a conductor is directly proportional to the applied potential difference provided the temperature of the conductor and other physical properties such as area and length remain constant. Watch the video on Ohm’s Law

Evaluation
1. Explain how to connect an ammeter in a circuit.
2. Explain how to connect a voltmeter in circuit.
3. What component provides energy in a DC circuit? Mention the type of energy.