Electric Current
The continuous flow of electrons in an electric circuit is called an electric current. The electrons move when the potential difference is applied across the wire or terminal. 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,
\(\begin{array}{l}I=\frac{V}{R}\end{array} \) |
Where,
- V is the voltage
- R is the resistance
- I is the current
Solved Examples
Let us discuss the example problems related to electric current.
Example 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 =
Example 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 =
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