Quiz 1 Flashcards
Electrical Energy Sources
Which of the following is not a method that can be employed to force electrons out of their valence
ring producing electrical current?
a. Chemical
b. Cold air
c. Friction
d. Light
e. Magnetism
b. Cold air
Which of the following is an effect or type of activity that can be produced by electrical energy?
a. Heat
b. Light
c. Magnetism
d. Pressure
e. All of the above
e. All of the above
Chemical electricity is a type of electricity or electrical charge that can be created by rubbing one type of material against a different type of material.
True of False?
False, the correct answer is Static Electricity. Static electricity is caused by friction between two materials being rubbed together, specifically, electrons being transferred from one material to another, leading to electrical charge.
Friction is a source of ? electricity.
a. Atmospheric
b. Chemical
c. Static
d. Magnetic
c. Static
The chemical source of electricity is best represented in our daily lives by the ?.
a. Atmosphere
b. Battery
c. Magnet
d. Semiconductor
b. Battery
Which symbol illustrates a two cell battery?
+⊥
⌯
-∣
What determines the individual cell voltage of a battery?
a. The metals used for each plate
b. The size of the battery
c. The size of the plate
d. The type of acid used
a. The metals used for each plate
When aluminum and silver are used for a battery cell, the aluminum will be the negative electrode.
True of False?
True
Batteries are divided into what two categories?
I. Alternate Cell
II. Dry cell
III. Primary Cell
IV. Secondary Cell
a. I. and II.
b. I and III.
c. II and III.
d. III. and IV.
d. III. and IV. (Primary and secondary cell)
Which type of battery cell can be recharged several times?
a. Alternate cell
b. Primary cell
c. Secondary cell
d. None of the above
c. Secondary cell
? is generated any time current flows through a wire.
a. Friction
b. Heat
c. Static
d. Resistance
b. Heat
Copper and aluminum need less energy to move the electrons; therefore, these types of metals are commonly used for conductors.
True of False?
True
Which of the following is an application where heat from electricity is a desired outcome?
I. Electric clothes dryer
II. Iron
III. Space heater
IV. Toaster
V. Water Pump
a. I. and II. only
b. I., III., and V. only
c. I., II., III., and IV. only
d. II., III., IV., and V. only
c. I., II., III., and IV. only
Thermoelectricity is heat generated by electricity.
False, the answer is the Joule heating effect. Thermoelectricity is typically understood as electricity being generated due to differences in temperature or heat.
A ? is very common in gas appliances such as water heaters.
a. capacitor
b. thermographer
c. thermistor
d. thermocouple
d. thermocouple
Electricity created by stress or pressure in a material is called ?.
a. photovoltaic
b. photosynthesis
c. piezoelectric
d. static
c. piezoelectric
Light has small particles of energy called photons.
True or False?
True
A photocell is a device that operates on which photoelectric effect?
a. Light-emitting
b. Photoconductive
c. Photosynthesis
d. Piezoelectric
b. Photoconductive
Incandescent lamps use poor conductors that become hot from ? and glow red or even white hot.
a. conducting current
b. excessive voltage
c. overload conditions
d. all of the above
a. conducting current
Which of the following is not a type of light producing device?
a. Cathode ray television tube
b. Fluorescent lamp
c. LED
d. Photo-eye
d. Photo-eye
How many filaments are in a three-way light bulb?
a. 1
b. 2
c. 3
d. 4
b. 2
Which diagram correctly illustrates the correct polarity and current flow through the circuit?
Underrating a cable can cause the insulation for the cable to ?.
a. deteriorate
b. expand
c. shrink
d. stretch
a. deteriorate
The ? of a conductor is the maximum current the conductor can carry safely without exceeding its temperature rating.
a. amperage
b. ampacity
c. power rating
d. voltage rating
b. ampacity
