Question

Draw a closed circuit diagram showing that electricity is flowing from the (+) to the (-) terminal of the power source. Label the (+) and (-) terminal, switch, and bulb. Explain briefly.

Answer 1

A simple closed circuit diagram is as given below.

In the it diagram, all the components, viz, battery (Voltage/power source), switch, and bulb are connected in series. hence current has only one path to flow, ie through the wire connecting these components.

• The battery will provide the necessary potential difference for the bulb to glow.
• The switch allows the circuit to be closed or open. Current can flow only through a closed circuit. Since electrons (being negative charge) always from negative to positive terminal (due to repulsion), the direction of current will be from the positive terminal of the battery to the negative terminal of the battery. (opposite to the direction of flow of electrons)
• When this current reaches the bulb, it glows using the current flowing in the circuit.