Electric Current

Electric current, is the amount of electric charge passing through the cross-section of a conductor per unit time. The unit of current in the International System of Units (SI) is the ampere (A), and one ampere is equal to the amount of one coulomb (C) of charge passing through the cross-section of a conductor in one second.

Mathematically, electric current is expressed as follows:

Here:

I: Electric current (A)

Q: Electric charge (C)

t: Time (s)

are defined as follows.

^{Electric Current}

1. Direct Current (DC): A type of current where electric charges move in a single direction. Sources such as batteries and solar panels generate DC.
2. Alternating Current (AC): A type of current where the direction and magnitude of electric charges change periodically. Electricity used in homes is typically in AC form, with a frequency ranging between 50-60 Hz depending on the country.

The relationship between electric current, voltage (V), and resistance (R) is defined by Ohm's Law.

Here:

I: Current (A)

V: Voltage (V)

R: Resistance (Ω)

are defined as follows.