Final Review 1

Inductive reactance acts like a ________ to hinder the flow of current in an AC circuit.

• capacitor

• resistor

• choke

Alternating current flowing through an inductor is opposed by resistance and _______.

• capacitance

• conductance

• inductance

• reactance

Which of the following is not necessary for induction to exist?

• conductor

• core

• relative motion

• magnetic field

Approximately how long will it take for the current to reach its maximum value in a circuit with 150 millihenries of inductance and 40 ohms of resistance? (Round answer to two decimal places)

______ms

Connecting additional inductors in an AC series circuit will cause the circuit current to ________.

• decrease
• increase

• stay the same

A circuit has a 120 volt, 60 cycle source. There are three inductors with values of 18 henries, 1800 millihenries, and 180 millihenries connected in parallel. What is the current of this circuit? (Round answer to two decimal places)

I(T) =___________ Amps

What is the inductive reactance of a coil with an inductance of 350 millihenries when connected to a 60-Hz supply? (Round answer to two decimal places)

XL=_________Ohms

In a purely inductive circuit that has a total inductance of 15 henries, 120 volt power supply, and a frequency of 100 hertz, what is the circuit's total current? (Round answer to two decimal places)

I(T)=_____mA

A 12 volt source is driving 26 milliamperes through an inductor at 531 kilohertz. What is the inductance of the inductor? (Round FINAL answer to two decimal places)

L=_____micro henries

In a purely capacitive circuit, current can flow only during the time the capacitor is _______.

• charging

• discharging

• charging or discharging