Chapter 1 Practice Test Flashcards
The flow of electrons in one direction throughout a circuit with a constant voltage and current.
Direct current.
What is the term used to express the amount of electrical energy stored in an electrostatic field?
Joules.
What determines the strength of the magnetic field around a conductor?
The amount of current.
Bohr’s atomic model consists of what three components.
Protons, neutrons, and electrons.
Electrons are arranged in ____ around a nucleus.
Shells.
What is the basic unit of electrical power?
Watt.
A conductor will have an induced current or voltage only when there is:
Relative motion between the wire and magnetic field.
What numerical value does violet have on a resistor?
7.
What is impedance?
The resistance of a component at a given frequency.
Which of the following does not affect inductance?
Length of the insulation.
What components value is measured in millihenries?
Inductor.
What is the term for the out of phase power associated with inductors and capacitors?
Reactive power.
What is the resistance for the following values:V= 14 Volts, I= 2 Amps.
7.
Which of the 4 groups of metals listed below are the best low-resistance conductors?
Silver, copper, gold.
What numerical value does the color code Red have on a resistor?
2.
