$\"\"$

The current in a circuit $\"\"$ is $\"\"$ and the impedance $\"\"$ is $\"\"$ .

Find the voltage.

$\"\"$ (Formula for voltage)

$\"\"$ (Substitute $\"\"$ and $\"\"$ )

FOIL method:

The product of two binomials is the sum of the products of the first terms, the outer terms, the inner terms and the last terms.

$\"\"$ (Foil method)

$\"\"$ (Multiply)

$\"\"$ (Substitute: $\"\"$ )

$\"\"$ (Add)

The voltage is $\"\"$ .

$\"\"$

The voltage is $\"\"$ .