Ohm's law calculator is a fundamental calculator in physics. Online calculator helps to determine the voltage of a given circuit in terms of current and resistance. The relation between voltage, current and resistance in Ohm's law is,

V = IR

where,**V**= voltage

**I**= current

**R**= resistance

**Step 1 :**Jot down the given parameters from the problem.

**Step 2 :**Substitute these variables in the given equation and find out the unknown value,

V = IR.

Let us discuss the problems related to Ohm's law.

### Solved Examples

**Question 1:**Calculate the voltage of the given circuit with a resistance 5$\Omega $ and flowing a current 2A.

**Solution:**

Given values are,

R = 5$\Omega $, I = 2A

Voltage of the circuit is,

V = IR

V = 2$\times$5 = 10V

**Question 2:**Find out the value of resistance of a circuit, the applied voltage is 15V and the current flowing through the circuit is 2.5A?

**Solution:**

Given values are,

V = 15V, I = 2.5A

Resistance of the circuit is,

V = IR

R = $\frac{V}{I}$

R = $\frac{15}{2.5}$ = 6$\Omega $