## What is AC and DC GCSE?

Electrical circuits, AC and DC Electrical circuits are connected in series or in parallel. Circuit components are shown as symbols. There are two types of current, alternating current (AC) and direct current (DC). Physics (Single Science) Electricity.

What is the difference between AC and DC GCSE physics?

Direct Current (DC) is current whose direction is constant and unchanging. Alternating Current (AC) is current whose direction changes from one way then back, repeatedly. Both AC and DC currents are produced when an AC or DC power supply are connected to a circuit.

What is AC in current GCSE?

If the current constantly changes direction it is called alternating current, or AC.

### What is a direct current GCSE?

A direct current flows in only one direction. On a voltage-time graph this would appear as a straight horizontal line at a constant voltage. Car batteries, dry cells and solar cells all provide a direct current (dc) that only flows in one direction.

Does UK use AC or DC?

Mains electricity is an AC supply, and the UK mains supply is about 230 volts. It has a frequency of 50Hz (50 hertz), which means it changes direction and back again 50 times a second. It’s better for transporting current over long distances, which is why we use it for mains electricity.

What is alternating potential difference GCSE?

Alternating current means that the current continually changes direction. In the UK the electricity supply is 50Hz, this means that the direction of the current changes 50 times a second! The potential difference is 230V.

#### Are batteries AC or DC?

DC
Batteries provide DC, which is generated from a chemical reaction inside of the battery.

What is alternating current and direct current?

Electric current flows in two ways as an alternating current (AC) or direct current (DC). In alternating current, the current keeps switching directions periodically – forward and backward. While in the direct current it flows in a single direction steadily.

Are phones DC or AC?

That is why portable electronics – flashlights, cell phones, laptops – use DC power; they have to store it. Plug-in vehicles are portable so they use DC batteries too (although most of them have AC motors – a complicating step we may consider another day).