Basics
What types of charges attract one another?
Opposite
Ohms is the standard unit of ________.
Resistance
What law describes the relationship between voltage, current and resistance?
A ______ is the connecting of components end to end
series circuit
In their pure form, all metals have a _____ _______ coefficient
positive temperature
The outermost electron occupied shell of an atom is referred to as the _________.
Valence shell
What characteristic of a resistor determines how much power in the form of heat can be dissipated.
Physical size
What instrument is used to measure current?
Ampmeter
Which of Kirchhoffs laws applies to series circuits?
His voltage law
What type of fuse should be used to allow for a temporary overload condition?
Slow blow fuse
An electron has a _________ charge.
Negative
A ______ is a component used to adjust the amount of current flowing through the circuit.
Rheostat
Resistance and current are _______ proportional
inversely
Which of the following problems causes maximum current in a parallel circuit?
(open/short)
short
What happens to normally closed timed closed contacts when the relay is energized?
They open instantly
An electron no attached to an atom is referred to as a __________.
Free electron
A component used to vary the voltage is called a _______.
Potentiometer
Solve for the unknown variable:
5V, 0.8A, __ohms
6.25ohms
Current is the same across all components connected in ______.
Series
The circular area of round wire, doubles for every ____ gage sizes
3
How is the fourth shell from the nucleus identified?
N
A color coded precision resistor has how many bands to indicate its value and tolerance?
5
The power company charges for electricity in _______________.
Kilo-Watt Hours
When an open component occurs in a series circuit, it can be noticed with a voltmeter because
The supply voltage appears across it
The current rating of a switch corresponds to the maximum current the switch can safely handle when it is _______.
Closed