Question

The relationship between voltage, E, current, l, and resistance,Z, is given by the equation E=IZ. If a circuit has a current l=3 +2i and a resistance Z=2 -i, what is the voltage of the circuit?

Answer 1

Answer: 10 + i

Explanation:

E = IZ

= (3 + 2i)(2 - i)

= 6 - 3i + 4i - 4i²

= 6 + i - 4(-1)

= 6 + i + 4

= 10 + i