Electric Current Formula

Electric current is nothing but the rate of change of electric charge through a circuit. This current is related to the voltage and resistance of a circuit. It can be represented by I and the SI unit is Amperes. Electric current relates the electric charge and the time.

According to Ohm’s law, the electric current formula will be,

\(I=\frac{V}{R}\)

Where,

  • V is the voltage
  • R is the resistance
  • I is the current

Electric Current Problems

Back to Top

Let us discuss the problems related to electric current.

Question 1: Calculate the current through the circuit in which the voltage and resistance be 15V and 3Ω respectively?

Solution:The given parameters are,
V = 15V
R = 3Ω
The equation for current using Ohm’s law is,
\(I=\frac{V}{R}\) 
I = \(\frac{15}{3}\) = 5A

Question 2: The voltage and resistance of a circuit are given as 10V and 4Ω respectively. Calculate the current through the circuit?

Solution:The given parameters are,
V = 10V
R = 4Ω
The equation for current using Ohm’s law is,
\(I=\frac{V}{R}\) 
I =\(\frac{10}{4}\) = 2.5A

Stay tuned with BYJU’S to learn more about other Physics related concepts.

 

Practise This Question

A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 joule, the angle which the force makes with the direction of motion of the body is