Difference Between Voltage And Current

Difference Between Voltage And Current

Difference between voltage and current is explained here in detail. The current and voltage difference is one of the most commonly asked questions from the electricity topic of physics. The difference between volts and amps given here can help the students to understand the basics better and know their comparisons thoroughly.

Before learning about the voltage and current difference, it is crucial to know the details of voltage and current thoroughly. Visit the below-given links to learn about voltage and current in detail along with other information.

Difference Between Voltage And Current

Sl. No.

Differentiating Property





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”.


Measuring Instrument

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.


Field Created

Voltage creates an electrostatic field.

Current creates a magnetic field.


Change in a Series Connection

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.


Change in a Parallel Connection

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.

These were the main differences between voltage and current. These current and voltage difference can help the students to know about this topic in detail and be able to answer any related questions easily in the exams.

Apart from these voltage and current differences, students can also check the article given below to know more about the related topics. These linked articles can help the students to learn topics like current and voltage formula, EMF, etc. in a detailed way.

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For more physics articles and differences, keep visiting BYJU’S.

Practise This Question

Two balls A and B of equal masses are projected upward simultaneously, one from the ground with speed 50 ms1 and other from height 40 m above the first ball high tower with initial speed 30 ms1. Find the maximum height attained by their centre of mass.