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Ohms Law Formula

Ohms law states that the current throw the conductor is directly proportional to the potential difference across its ends provided the temperature and other physical conditions are constant.

Ohms Law Formula is given by

V is Voltage measured in Volts,
I is the current flowing through the conductor in amperes,
R is the resistance measured in ohms.

Ohms law formula (potential difference formula) is used to find the Voltage, current and resistance in any given circuit, if any of the two quantities are given.

Related Calculators
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Ohms Law Problems

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Below are some problems on ohms law which may be helpful for you.

Solved Examples

Question 1: A potential difference of 10 V is applied across a conductor whose resistance is 25 $\omega$. Find the current flowing through it?
Given: Potential difference V = 10 V,
             Resistance R = 25 $\omega$,
The current is given by I = $\frac{V}{R}$
                                            = $\frac{10}{25}$
                                            = 0.4 A.

Question 2: If current passing through the conductor is 5 A and conductance is 50 $\omega$. Find the potential difference?
Current I = 5 A,
Resistance R = 50 $\omega$,
Potential difference V = IR
                                       = 5A $\times$ 50 $\omega$
                                       = 250 v.

More topics in Ohms Law Formula
Voltage Drop Formula Resistance Formula
Resistivity Formula
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