Waa maxay korontadu?
Korontadu waa qulqulka elektarooniga ah ee ka yimaada awoodda korontada ee sare ilaa mid hoose (ama haddii kale, qulqulka godadka elektarooniga ah ee jihada ka soo horjeedda). Elektaroonnada qulqulaya waxay qaban karaan shaqooyin, laga bilaabo kuleylinta walxaha iska caabinta ee nalalka ilaa ku wareejinta mootada iyada oo loo marayo magnetic field.