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Worksheets(Unit #1-4) Delmar's Standard Textbook of Electricity: Quiz
Total questions: 40
Worksheet time: 3hrs 20mins
The nucleus of an atom contains?
Electrons (-) & Protons (+)
Neutrons (0) & Protons (+)
Electrons (-) & Quarks (?)
Neutrons (0) & Quarks (?)
What type of magnet depends on flowing current to produce a magnetic field?
Electromagnet
Permanent Magnet
Domain Magnet
Temporary Magnet
What type of circuit generally occurs when the conductors leading from and back to the power source become connected?
Short Circuit
Closed Circuit
Grounded Circuit
Open Circuit
The valence shell of an atom is the?
Inner Shell
Outer Shell
Middle Shell
Bottom Shell
A semiconductor contains (?) valence electrons.
Four (4)
Three (3)
Five (5)
Seven (7)
The unit of resistance to current flow is the?
Ohm
Ampere
Watt
Volt
The amount of potential necessary to cause one coulomb to produce one joule of work is a(n)?
Ampere
Watt
Ohm
Volt
What is the smallest part of an element that still retains the properties of that element?
A Proton
An Atom
An Electron
A Neutron
What force is demonstrated in objects with unlike charges?
Repulsion
Attraction
What are the three principle parts of an atom?
Electron (-), Proton (+), & Quark (?)
Neutron (0), Positron (?) , & Electron (-)
Neutron (0), Quark (?), & Electron (-)
Electron(-), Neutron (0), & Proton (+)
Matter has mass and occupies space.
True
False
Lightning rods provide an easy path to ground for current.
True
False
The atomic number of an element is the number of (?) in the nucleus.
Protons
Quarks
Electrons
Neutrons
A toaster is listed as 1,560 W. When it is plugged into a 120 V circuit and starts to make toast, how many amperes will it draw?
187,200 A
1,680 A
13 A
1,440 A
An insulator is a material containing (?) valence electrons.
One (1) or Two (2)
Five (5) or Six (6)
Three (3) or Four (4)
Seven (7) or Eight (8)
What is the most common method of producing electricity?
Friction
Light
Magnetism
Chemicals
What is another term for electromotive force (EMF)?
Wattage
Amperage
Ohmage
Voltage
What standard prefix in engineering notation indicates multiplication by 1,000,000,000?
Giga (G)
Mega (M)
Tera (T)
Kilo (K)
The neutral conductor is also referred to as the?
Grounded Conductor
Safety Conductor
Short Conductor
Hot Conductor
Bringing a charged test object near the ball of a charged electroscope causes the leaves to move closer together. This indicates that the test object charge is the (same / opposite) polarity as the electroscope charge.
(a)
An electric motor is running on 120 V. The current is measured to be 2 A. How many ohms of resistance is the motor?
60 Ω
118 Ω
122 Ω
240 Ω
Within a lightning bolt, current flows?
In both directions (-) & (+).
From positive (+) to negative (-).
From negative (-) to positive (+).
I don't know...
When an object protected by a lightning (?) is struck by a lightning bolt, it will bleed the lightning discharge to ground before the protected object can be harmed.
Catcher
Rod
Umbrella
Arrestor
Electrical current is the flow of?
Neutrons
Electrons
Quarks
Protons
The basic law of physics states that like charges (?) and opposite charges (?).
Counteract; Combine
Attract; Repel
Combine; Counteract
Repel; Attract
A basic law of magnetism states that unlike poles (?) and like poles (?).
Attract; Repel
Repel; Attract
What part of an atom has a negative charge?
Electron
Quark
Neutron
Proton
An electrical circuit has a voltage of 50 V and a resistance of 5 Ω. What is the value of current?
250 A
10 A
45 A
55 A
What part of an atom has a positive charge?
Quark
Proton
Electron
Neutron
If an object is placed in the field of an strong electromagnet connected to an AC line, the object will be?
Magnetized
Demagnetized
Approximately how many horsepower is an electrical device listed as 3,000 watts?
4 HP
41 HP
61 HP
6 HP
Magnetic lines of force are referred to as?
Spin
Reluctance
Bands
Flux
The static charge sometimes used during spray painting is an example of a(n)?
Useful Static Charge
Nuisance Static Charge
The amount of electrical power being used in a circuit is measured in?
Volts
Amperes
Watts
Ohms
Selenium is a(n)?
Semiconductor
Conductor
Insulator
I don't know...
The strength of an electromagnet is primarily proportional to its?
Diameter
Core Resistance
Ampere-turns
Length
Insulators are the only materials that can hold (electrons / elements) stationary.
(a)
What force is demonstrated in objects with like charges?
Attraction
Repulsion
A conductor is made from a material that contains between (?) valence electrons.
Four (4) & Six (6)
Two (2) & Four (4)
Three (3) & Five (5)
One (1) & Three (3)
An electric circuit has a resistance of 20 Ω. The current is measured to be 6 A. How many volts are applied to the circuit?
14 V
26 V
120 V
331 V
