1.
Find the product
. Express the result in rectangular form.
A.
-6
B.
6
i
C.
6
D.
-6 +
i
Hint
2.
Find the quotient
. Express the result in rectangular form.
A.
-4
B.
-4
i
C.
4
D.
4
i
Hint
3.
Find the product 5(cos 120° +
i
sin 120°)
·
2(cos 90° +
i
sin 90°). Express the result in rectangular form.
A.
B.
C.
D.
Hint
4.
In a circuit with alternating current,
, where
E
represents voltage,
I
current, and
Z
impedance. Determine the voltage in a circuit where there is a current of
amps and an impedance of
ohms.
A.
B.
C.
D.
Hint
5.
Find the product
. Express the solution in rectangular form.
A.
B.
3
C.
0
D.
-3
Hint