AC Theory Level 1 Lesson 2- Working With inductors that are in series and/or in parallel

Three coils with inductance values of 250 millihenries, 3.5 henries, and 600 millihenries are connected in series. A 24-volt, 400-hertz signal is applied to the circuit. What is the current? (Round the FINAL answer to four decimal places.)

0.0022 A

Three coils with inductance values of 250 millihenries, 3.5 henries, and 600 millihenries are connected in series. A 24-volt, 30-hertz signal is applied to the circuit. What is the current? (Round the FINAL answer to three decimal places.)

0.029 A

Two identical coils are connected in series in an industrial control circuit. When a 240-volt, 60-hertz source is applied to the circuit, the total current is 2.2 amperes. Solve for the following

109.09 0.289 90.91 2.42

Calculate the current in a circuit that contains a 10-millihenry coil (L1) and a 25-millihenry coil (L2) in parallel with a 6-volt, 1-kilohertz source. Then calculate the current again if the frequency was doubled to 2 kilohertz.

133.69 66.85

Calculate the current in a circuit that contains a 10-millihenry coil (L1) and a 25-millihenry coil (L2) in series with a 6-volt, 1-kilohertz source. Then calculate the current again if the frequency was doubled to 2 kilohertz.

27.28 13.64

Two inductors are connected in parallel and fed by a one-kilohertz source. Solve for the following: (Round the FINAL answers to two decimal places.)

3.33 62831.8530718 31415.9265359 20944

In the circuit shown, three coils are placed in series. The total inductive reactance for this circuit is 150 ohms. Inductors L1 and L2 have inductive reactances of 60 ohms each. What is the inductive reactance of L3?

30 Ohms

Three coils with inductance values of 250 millihenries, 3.5 henries, and 600 millihenries are connected in series. What is the total inductance? (Round the FINAL answer to two decimal places of the unit shown.).

4.35 H

Adding additional inductors in parallel in a circuit that already contains inductors will ? the total inductive reactance of the circuit.

A- Decrease

Adding additional inductors in series in a circuit that already contains inductors will ? the total inductive reactance of the circuit.

B- Increase

In order to find the total inductive reactance in a series or parallel circuit containing more than one inductor, the same method must be used that was used to find inductance.

True

The total inductance of series and parallel inductors in a circuit is calculated the same way as the total resistance is calculated for series and parallel resistors in a circuit

True

The total inductance when there is more than one inductor connected in parallel can be determined by the formula:

True

is the formula for finding the total inductance of a circuit when there is more than one inductor connected in series.

True