The trigonometric form of complex numbers is often used by electrical engineers to describe the current I, voltage V, and impedance Z in electrical circuits with alternating current. Impedance is the opposition to the flow of current in a circuit. Most common electrical devices operate on 115-volt, alternating current. The relationship among these three quantities is
. The real part of I represents the actual current delivered to an electrical appliance in amps. Approximate this current when
and
, and express the answer in rectangular form to two decimal places.
A) 2.61 amps
B) 1.30 amps
C) 1.37 amps
D) 1.25 amps
E) 1.15 amps
Correct Answer:
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