The relationship between voltage, E, current, I, and resistance, Z, is given by the equation E = IZ. If a circuit has a current I = 3 + 2i and a resistance Z = 2 – i, what is the voltage of the circuit?
a. 4 – i
b. 4 + i
c. 8 + i
d. 8 + 7i

Question

The relationship between voltage, E, current, I, and resistance, Z, is given by the equation E = IZ. If a circuit has a current I = 3 + 2i and a resistance Z = 2 – i, what is the voltage of the circuit?
a. 4 – i
b. 4 + i
c. 8 + i
d. 8 + 7i

anonymous · Answer

multiply 3 + 2i and  2 – i

anonymous · Answer

use FOIL and reduce it to 8 + i