Using a direct electrical current to make toast would not be practical or effective. Toasting bread requires controlled and evenly distributed heat, which is typically achieved through the use of heating elements in a toaster. A direct electrical current would not provide the necessary even heat distribution for toasting bread properly.
When you use a toaster, it passes an alternating electrical current (AC) through the heating elements. The heating elements become hot and generate radiant heat, which toasts the bread evenly on both sides. The toaster is designed to regulate the temperature and timing to achieve the desired level of toasting without burning the bread.
If you were to apply a direct electrical current (DC) to the bread, it would likely result in uneven heating and potentially lead to burning in some areas while leaving other parts untoasted. Additionally, using a direct electrical current to heat the bread could be hazardous and may cause electrical arcing or other safety issues.
Toasters are designed specifically for toasting bread and other items effectively and safely. It's best to stick with using a toaster for this purpose and avoid attempting to toast bread with a direct electrical current.