DC and AC current

Question 1

What type of current is the current in a cell?

Answer 1

• |Direct current (DC);

- Travels in one direction.

Question 2

What is an AC current?

Answer 2

• Main electricity in the UK is an alternating current.
• AC.
• Current is constantly changing direction.
• Has a frequency of 50Hz.
• Potential difference 230 Volts.

Question 3

What is the benefits of AC?

Answer 3

• Very easy to use a transformer to increase or decrease the potential difference.

Question 4

What is an Oscilloscope?

Answer 4

• Height of peak: Maximun potential difference.
• ## Direct current: Potential difference does not change.