WorksheetsBatteries and Other Small Sources of Electricity
Total questions: 51
Worksheet time: 1hrs 2mins
Several voltage producing cells connected together generating a voltage
A voltaic cell that cannot be recharged
A voltaic cell that can be recharged
List of metals in order of their ability to accept or receive electrons.
device used to measure the specific gravity of a cell
An extremely long- life span cell capable of producing large amounts of current
group of voltaic cells connected together to form a battery
constructed with two unlike metals and an electrolyte
device produced by joining two dissimilar metals for the purpose of producing electricity with heat
A measure of the amount of acid contained in the water of a cell
production of electricity by applying pressure to a crystal
combination of P- and N- type semiconductor material to form a cell that is used to produce a voltage when exposed to light.
terminals through which electricity enters or leaves an object, substance, or region
The most common source of electrical energy is the
photovoltaic cell
Thermocouple
lead acid battery
alternator
Galvani's experiments with frog legs demonstrated that
there is a relationship between the twitching response and electric current
electricity flows whenever copper touches iron
the twitching response causes electricity
a voltaic pile is an example of a
battery
cell
piezoelectric effect
generator
the voltage produced by a battery depends on
its diameter
the materials used to make it
its weight
all of the above
a potato is used to
provide the electrolyte
control current flow
support the voltmeter
all of the above
if a high cell voltage is desired you should choose metals from the list that are
near the top
near the bottom
near the middle
far apart
the metals that accepts electrons better than the other metal in the cell will be
negative terminal
positive terminal
neutral point
electrolyte
a metal may not be suitable in a cell because
it corrodes away
it is too expensive
it reacts to produce high resistance
all of the above
the gas produced in a copper, zinc, hydrochloric acid cell is
hydrogen
oxygen
nitrogen
cyanide
single hydrogen ions are
negatively charged
positively charged
no charge
which of the following is not a leclanche cell
carbon-zinc
a cell with an ammonium chloride-manganese dioxide electrolyte
a dry cell
a lead-acid cell
what happens to the carbon-zinc cell near the end of its life cycle?
the carbon turns to carbon dioxide
the zinc dissolves
the electrolyte evaporates
the voltage is cut in half
which of the following is not an advantage of a button cell
energy density
compact size
expected lifetime
cost
which of the following would be a good application for a lithium cell
child toy
computer powered memory backup
gas engine starter motor
flashlight
which cell size has the highest current capacity
A
B
C
D
A common energy rating of a primary cell is the
watt
volt
ohm
milliampere-hour
if a cell can produce 1 mA for 1000 hours, it should also be able to produce
10 mA for 100 hrs
1000mA for 10 hrs
5mA for 500 hrs
.5 mA for 3000 hrs
why do batteries have different voltage ratings at full load and at no load
voltage output decreases with age
some batteries are physically smaller than others
the physical location of the battery is unpredictable
batteries have internal resistance
over a period of time the internal resistance of a battery will
increase
decrease
stay the same
the lead-acid battery is an example of a
primary cell
secondary cell
lithium cell
the hydrometer is used to measure
specific gravity
relative humidity
temperature
hydrogen concentration
specific gravity is a measure of
weight
percent acid in electrolyte
atmospheric pressure
the seriousness of a situation
during the discharge cycle of a lead-acid battery, a layer of _ forms on the negative terminal
lead dioxide
lead sulphate
pure lead
sulfuric acid
A basic operational principle of all batteries is that
mechanical energy is being converted to chemical energy
mechanical energy is being converted to electrical energy
heat energy is being converted to electrical energy
chemical energy is being converted to electrical energy
the discharge level of a lead-acid battery can be measured by looking at
the specific gravity of the electrolyte
the terminal voltage under load
both
neither
the energy conversion process during the charging cycle of a lead-acid battery
is the same as the discharge cycle
is the reverse of the discharge cycle
is entirely different than the discharge cycle
multiple plates are used in lead-acid batteries to
increase surface area
increase current capacity
both
neither
Why must the charging rate of a lead-acid battery be controlled
the regeneration of the acid takes time
build up of lead sulphate cause a short in the battery
explosive levels of hydrogen gas could accumulate
all of the above
the maximum ambient temperature at which a lead acid battery should be charged is
0 F
86 F
100 F
110 F
The amp-hour rating and the cold-cranking amp rating
only apply to dry cells
mean the same thing
refer to entirely different ratings
are both used for load testing
principle advantage of the nickel-iron battery over the lead-acid battery
weighs less
costs less
can be deeply discharged without harm
long shelf life
Name three advantaged of a ni-cad battery
Name three disadvantages of a ni-cad battery
When cells are connected in parallel their amp-hour capacity
increases
decreases
stays the same
why should batteries of different voltage rating never be connected in parallel
current will flow through both batteries even if no load is attached
one of the batteries could explode
both
neither
A solar cell converts
mechanical energy to electrical energy
electrical energy to light energy
heat energy to electrical energy
light energy into electrical energy
A silicon cell produces about
.5 volts/cell
1.0 volts/cell
1.5 volts/cell
2.2 volts/cell
A solar cell is constructed from
metals
insulators
semiconductors
conductors
