AC & DC (OCR GCSE Physics A (Gateway Science Suite)): Flashcards

Current flowing in only one direction at constant voltage

Horizontal line

Current that reverses direction at regular intervals

Alternates between positive and negative values

More efficient transfer - transformers easily change P.D.

$50$ Hz

$230$ V

$+230$ V and $-230$ V

50 times per second

Used to see the pattern of electrical current

$\text{frequency} = \frac{1}{t}$

Time of one cycle

Remains constant

Changes direction periodically