Question

What causes electric current?

Answer 1

An electric current is caused by flow of free electrons from one atom to another/ rate of flow of charge

Answer 2

$\to$ Electric current is the rate of flow of electric charge is called current

$\to$ It is denoted by I

$\fbox{\fbox{ \bold{ \large{Current \: ( I ) = \frac{Charge \: ( Q ) }{Time \: ( T )} </p><p> \: }}}}$

$\to$ The SI unit of current is Ampere

$\to$ Electric current caused by the flow of free electrons