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47 questions
The smallest part of an atom is the
proton
neutron
electron
nucleus
The part of an atom with a negative charge is the
proton
neutron
electron
nucleus
The part of the atom with a positive charge is
proton
neutron
electron
valance electron
The outer most layer of an atom is
proton
neutron
electron
valence electron
The center mass of an atom is
proton
neutron
nucleus
electron
What category does GOLD best fit in?
insulator
conductor
semiconductor
What category does Germanium best fit in?
conductor
insulator
semiconductor
What category does GLASS best fit in?
conductor
insulator
semiconductor
Convert 5500Ω to kΩ
5
55
5.5
550
5 kg = ? mg
5,000
50,000
500,000
5,000,000
5.7 cm = ? m
0.57
0.057
0.0057
0.00057
50.067 mJ = ? cJ
500.67
50.67
5.0067
0.50067
The binary number 10011 equals
3
9
19
111
1000100 equals
2
11
10001
68
5 in binary is
01
101
1001
10001
77 in binary is
10001101
1001101
101101
11101
456 in binary is
110010
1110010
11100100
111001000
What is the International System of Units unit of electric charge?
coulomb
volt
amp
ohm
Between magnetic objects, those with like charges _____ and those with unlike charges _____.
attract/ attract
attract/repel
repel/repel
repel/attract
As distance between objects increases, the forces and electric fields ____.
increase
decrease
remain constant
Which devices use electrostatic charges? Select all that apply.
powder coating
doorbell
motor
photocopier
The magnetic flux lines produced by a current-carrying wire will be oriented the same direction as the curled fingers of a person's left hand
Lenz's Law
Left Hand Rule
Right Hand Rule
Hall Effect
Production of a voltage difference across an electrical conductor that is transverse to an electric current in the conductor and to an applied magnetic field perpendicular to the current
Left Hand Rule
Faraday's Law
Lenz's Law
Hall Effect
When a coil of wire is moved through a magnetic field a voltage is generated
Faraday's Law
Hall Effect
Lenz's Law
Right Hand Rule
If you point your thumb in the direction of the current and let your fingers assume a curved position, the magnetic field circling around those wires flows in the direction in which your four fingers point.
Right Hand Rule
Left Hand Rule
Lenz's Law
Hall Effect
Induced electric current flows in a direction such that the current opposes the change that induced it
Hall Effect
Faraday's Law
Lenz's Law
Left Hand Rule
The magnetic influence on moving electric charges, electric currents, and magnetic materials is
magnetic field
magnetic flux
magnetic force
The number of magnetic field lines passing through a given closed surface
magnetic field
magnetic force
magnetic flux
This is produced when an electrical current flows through a conductor as current passes along the whole of the conductor then a magnetic field is created along the whole of the conductor.
electromagnetism
electric current
voltage
magnetic flux
The process of generating electric current with a magnetic field is
electric charge
resistance
electromagnetic induction
magnetic flux
An electrically operated switch is
a diode.
an inductor.
a capacitor.
a relay.
Which metal is not attracted to magnets?
aluminum
cobalt
iron
nickel
The magnet in a compass aligns with the Earth's magnetic field
True
False
Right Hand Rule finds the _____ of the force.
driection
magnitude
Faraday found that magnetic fields can create electric fields. Under what circumstances will a magnetic field create an electric field?
When the magnetic field changes with time
There is no relative motion
When the current is steady.
An overall negative charge means that the object has __________ electrons
excess
too few
balanced
Atoms are neutral when
neutrons = electrons
protons = neutrons
protons = electrons
An atom's charge can be changed
when it gains or loses electrons
when it gains or loses neutrons
when it gains or loses protons
A type of magnet that has temporary magnetic effect when electric current flows through it.
This refer to
Electric
Electronic
Electrostatic
Electromagnet
neodymium magnets
Powder applied electrostatically and then cured under heat. ie: the powder is attracted to the electrostatically charged item then it's baked is called...
Dry Powder Coating
Plastic coating
Plastic wrapping
This device turns electrical energy into mechanical energy
relay
solenoid
speaker
transformer
When working with a power supply, you should keep the power to your circuit on when you make changes so you can quickly test your circuit.
True
False
If you have a missing assignment, you can work in the lab on your own.
True
False
If you finish the assigned lab, you should experiment with the materials to see what you can build.
True
False
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