Difference between voltage and current

Voltage, also called as electromotive force is simply the energy per unit charge. In other words, voltage is the difference in electric potential between two points.

Current is just the rate of flow of electric charge. In simple words, current is the rate at which electric charge flows in a circuit at a particular point.

The SI unit of voltage is Volts (V).

Note: 1 Volt= 1 Joule/coulomb.

The SI unit of current is Ampere (A).

Note: 1 Ampere = 1 coulomb/second.

Voltage is denoted by “V”.

Current is denoted by “I”.

Voltage can be measured by using a Voltmeter.

Current can be measured by using an Ammeter.

Voltage is the cause of the current.

Current is the effect of the voltage i.e. current cannot flow without voltage.

One of the formulas to calculate voltage is:

V= Work done/Charge

One of the formulas to calculate current is:

I= Charge/ Time

Loss of voltage occurs due to impedance.

Loss of current occurs due to the passive elements.

Voltage creates an electrostatic field.

Current creates a magnetic field.

In a series connection, voltage changes i.e. it gets distributed over all the components.

In a series connection, the current remains same through all the components.

In a parallel connection, the voltage remains same across all the components.

In a parallel connection, current changes i.e. it gets distributed over all components.