Q.1
The nominal value of a brown, black, yellow, and gold resistor is 100,000 ohms.
Q.2
A wiper is the sliding contact in a
Q.3
When the current is 2.5 A, how many coulombs pass a point in 0.2 s?
Q.4
A free electron is a valence electron that has broken away from its parent atom.
Q.5
The atomic number is the number of neutrons in the nucleus.
Q.6
An open circuit is one that has a complete current path.
Q.7
A neutral atom is one with an equal number of protons and electrons.
Q.8
Free electrons make current possible.
Q.9
A material that does not allow current under normal conditions is a/an
Q.10
The unit of electrical charge is the
Q.11
Eighttenths coulomb passes a point in 4 s. The current in amperes is
Q.12
Current flows in a circuit when
Q.13
An ammeter is connected across the current path.
Q.14
A voltmeter is connected across the current path.
Q.15
An ohmmeter is an instrument for measuring
Q.16
A red, red, orange, gold resistor has a nominal value of
Q.17
A twoterminal variable resistor is known as a
Q.18
The maximum resistance value for a brown, red, yellow, gold resistor is
Q.19
Which of the following is not a type of energy source?
Q.20
A thermistor is a type of
Q.21
A potentiometer is a twoterminal variable resistor.
Q.22
The current in a given circuit is not to exceed 24 A. Which value of fuse is best?
Q.23
Electrons in the outer orbit are called
Q.24
An ammeter is an electrical instrument used to measure
Q.25
The minimum resistance value for a blue, gray, red, silver resistor is
Q.26
When placed close together, two positively charged materials will
Q.27
A circuit breaker is a
Q.28
Materials with lots of free electrons are called
Q.29
The colored bands for a 4,700 ohm resistor with a ten percent tolerance are
Q.30

A two-terminal variable resistor is known as a

  • potentiometer
  • thermistor
  • rheostat
  • wiper
0 h : 0 m : 1 s