Question

give explanation about electric current and derive its formaula​

Answer 1

Answer:

Electric current flows from A to B, and thus V(A) > V (B). Mathematically, electric current is defined as the rate of flow of charge through the cross-section of a conductor. Thus, it is given by I = ∆Q/ ∆t where I is the electric current and ∆Q is the quantity of electric charge flowing through a point in time ∆t.

Answer 2

Answer:

Current is usually denoted by the symbol I. Ohm's law relates the current flowing through a conductor to the voltage V and resistance R; that is, V = IR. An alternative statement of Ohm's law is I = V/R.