voltage/current

Voltage:

The difference in the potential of two charged bodies is called potential difference.

Potential Difference between two points is the work done per unit charge when a charge is moved from one point to the other.is called voltage

The defining equation for this is,

V = W/Q

Where:

V = the voltage in volts.

W= energy in joules.

Q = is the charge in coulombs,

Current:

The rate of charge flow of one coulomb per second.

Mathematically, this can be expressed as:

    I = Q/t

Where:

I = the current in amperes.

Q= the charge in coulombs.

t = the time in seconds.

Two types of current: the direct current and an alternating current