Worked formula example

Ohm's Law Examples

With 0.25 A through 48 ohms, the voltage is 12 V. The example keeps the problem, given values, formula, substitution, and copyable result sentence together so the calculator page can be opened only when values or units change.

Worked examples

Step	Value
Problem	Find voltage when current and resistance are known.
Given values	I = 0.25 A, R = 48 ohms
Formula	V = I x R
Calculation	V = 0.25 x 48 = 12 V
Copyable result sentence	With 0.25 A through 48 ohms, the voltage is 12 V.

Step	Value
Problem	Find current when voltage and resistance are known.
Given values	V = 24 V, R = 12 ohms
Formula	I = V / R
Calculation	I = 24 / 12 = 2 A
Copyable result sentence	With 24 V across 12 ohms, the current is 2 A.

Step	Value
Problem	Find power after solving an ohmic load.
Given values	V = 12 V, I = 0.25 A
Formula	P = V x I
Calculation	P = 12 x 0.25 = 3 W
Copyable result sentence	A 12 V load at 0.25 A dissipates 3 W.

Copyable result sentence

With 0.25 A through 48 ohms, the voltage is 12 V.

Common mistakes

Dropping units before the ohm's law examples substitution.
Rounding the ohm's law examples calculation before the final step.
Using a formula variant that does not match the known values for ohm's law examples.