Question

What is electric current? write its mathematical expression.​

Answer 1

Answer:

An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume

I=V/R with I being the current in Amps, V being the voltage in Volts and R being the resistance in Ohms.

Answer 2

Answer:

Electric current is the rate of change of electric charge through a circuit. This electric current is related to the voltage and resistance of the circuit. Using Ohm's law, we can represent as the formula: I= \frac {V}{R}