Answer: Light bulb
Explanation:
In an electric circuit, a battery provides potential difference across the circuit when it is connected between the positive and negative terminals of the battery.
A switch is used to open or close a circuit. when open, no current flows through the circuit.
A wire connects all the components of the circuit. Current flows through the wires.
A light bulb provides resistance in the circuit.
According to Ohm's law:
V = I R
A light bulb glows because energy is dissipated in the form of heat and light to overcome the resistance offered by the bulb. Bulb has resistance R. When current I flows through it, rate of energy consumed:
Power, P = I² R
