As current passes through a conductor:
When an electromagnet reaches maximum strength, it is considered to be:
A rapidly reversing magnetic field causes heat dissipation know as:
A conductor’s magnetic field causes heat dissipation know as:
Electromagnetism induction is the generation of:
An inductor is rated by a unit named:
What is one characteristic of an induction?
Inductance is the ability of a coil to oppose:
The formula to determine total inductance when inductors are connected in parallel is similar to:
10. Three parallel inductors of 84 mh, 96 mh, and 160 mh, will provide a total inductance of how many millihenrys?
Opposition to current flow without the dissipation of energy is called:
In an inductive circuit, reactance will:
XL = 2^ f L
What is the phase angle in a purely inductive circuit?
14. What is the inductive reactance of a 1mH coil, when the applied frequency is 15 kHz?
XL = 2^f L
15. What is the impedance of a 1 kHz series RL circuit, when R and XL are both 1000 ohms?
Z = R2 + XL2
= (1000)2 + (1000)2
What is the total impedance of a series circuit, when the applied frequency is 455 KHz, and L=10 mH?
XL = 2^ f L = 2^ (455,00)(.010)
XL = 28.59 Kohm
Zt = (15.)2 + (28.59)2
What is the true power of a 24 Vac parallel RL circuit, when R = 45 ohms, and XL = 1100 ohms?
P true = (Vs)2 / R
(24v)2 / 45ohm
The circuit impedance for a 60 Vac single coil circuit that has a coil current of 4.47 amps is:
V = I Z / Z = V