What we mean by an electric current? - Worksheet - Year 6

An electric current refers to the flow of electric charge, typically carried by moving electrons in a wire. It's the movement of these charges that allows electricity to be used as a source of power. When we plug in a device or switch on a light, we're tapping into this flow of electrons to operate our electrical appliances. The strength of an electric current is measured in amperes (amps), and this determines how much power can be supplied to a device or appliance. A higher current means more power is being transferred, allowing for more energy-intensive devices to function.

The way electricity works is through a circuit where the current flows from a power source, like a battery or a power plant, through wires and into our devices, before returning to the source. The power of electricity can vary based on the voltage and resistance within the circuit. Electrical energy, on the other hand, can vary depending on how long the current flows and the power of the current. This energy is what does the work, such as lighting up a bulb or heating a kettle, and is measured in watt-hours or kilowatt-hours. Understanding these concepts helps us to use electricity safely and efficiently in our daily lives.