Login or Register for FREE!
Subelement ZLB
Basic Electrical Theory
Section ZLB03
Electronics Fundamentals
The element Silicon is
  • a conductor
  • an insulator
  • a superconductor
  • Correct Answer
    a semiconductor
This question does not yet have an explanation! Register to add one

Tags: none

An element which falls somewhere between being an insulator and a conductor is called a
  • P-type conductor
  • intrinsic conductor
  • Correct Answer
    semiconductor
  • N-type conductor
This question does not yet have an explanation! Register to add one

Tags: none

In an atom
  • the protons and the neutrons orbit the nucleus in opposite directions
  • the protons orbit around the neutrons
  • Correct Answer
    the electrons orbit the nucleus
  • the electrons and the neutrons orbit the nucleus
This question does not yet have an explanation! Register to add one

Tags: none

An atom that loses an electron becomes
  • Correct Answer
    a positive ion
  • an isotope
  • a negative ion
  • a radioactive atom
This question does not yet have an explanation! Register to add one

Tags: none

An electric current passing through a wire will produce around the conductor
  • an electric field
  • Correct Answer
    a magnetic field
  • an electrostatic field
  • nothing
This question does not yet have an explanation! Register to add one

Tags: none

These magnetic poles repel
  • unlike
  • Correct Answer
    like
  • positive
  • negative
This question does not yet have an explanation! Register to add one

Tags: none

A common use for a magnet is in
  • Correct Answer
    A computer speaker
  • An optical mouse
  • A keyboard
  • A magnetic loop antenna
This question does not yet have an explanation! Register to add one

Tags: none

The better conductor of electricity is
  • Correct Answer
    copper
  • carbon
  • silicon
  • aluminium
This question does not yet have an explanation! Register to add one

Tags: none

The term describing opposition to electron flow in a metallic circuit is
  • current
  • voltage
  • Correct Answer
    resistance
  • power
This question does not yet have an explanation! Register to add one

Tags: none

The substance which will most readily allow an electric current to flow is
  • an insulator
  • Correct Answer
    a conductor
  • a resistor
  • a dielectric
This question does not yet have an explanation! Register to add one

Tags: none

The plastic coating formed around wire is
  • Correct Answer
    an insulator
  • a conductor
  • an inductor
  • a magnet
This question does not yet have an explanation! Register to add one

Tags: none

The following is a source of electrical energy
  • p-channel FET
  • carbon resistor
  • germanium diode
  • Correct Answer
    lead acid battery
This question does not yet have an explanation! Register to add one

Tags: none

An important difference between a common torch battery and a lead acid battery is that only the lead acid battery
  • has two terminals
  • contains an electrolyte
  • Correct Answer
    can be re-charged
  • can be effectively discharged
This question does not yet have an explanation! Register to add one

Tags: none

As temperature increases, the resistance of a metallic conductor
  • Correct Answer
    increases
  • decreases
  • remains constant
  • becomes negative
This question does not yet have an explanation! Register to add one

Tags: none

In an n-type semiconductor, the current carriers are
  • holes
  • Correct Answer
    electrons
  • positive ions
  • photons
This question does not yet have an explanation! Register to add one

Tags: none

In a p-type semiconductor, the current carriers are
  • photons
  • electrons
  • positive ions
  • Correct Answer
    holes
This question does not yet have an explanation! Register to add one

Tags: none

An electrical insulator
  • lets electricity flow through it in one direction
  • Correct Answer
    does not let electricity flow through it
  • lets electricity flow through it when light shines on it
  • lets electricity flow through it
This question does not yet have an explanation! Register to add one

Tags: none

Four good electrical insulators are
  • plastic, rubber, wood, carbon
  • glass, wood, copper, porcelain
  • paper, glass, air, aluminium
  • Correct Answer
    glass, air, plastic, porcelain
This question does not yet have an explanation! Register to add one

Tags: none

Three good electrical conductors are
  • copper, gold, mica
  • gold, silver, wood
  • Correct Answer
    gold, silver, aluminium
  • copper, aluminium, paper
This question does not yet have an explanation! Register to add one

Tags: none

The name for the flow of electrons in an electric circuit is
  • voltage
  • resistance
  • capacitance
  • Correct Answer
    current
This question does not yet have an explanation! Register to add one

Tags: none

Go to ZLA02 Go to ZLC15