Energy Change in
2 Class Days
This makeup lab is unique from most others in that it does not
actually involve a laboratory exercise. Rather, this makeup lab
involves the completion of a writing assignment which demonstrates
your understanding of the energy transformations which occur in
Our Current Electricity unit has focused (in
part) upon energy transformations which occur in a circuit. We have
discussed the role of the battery and the role of resistive elements
in a circuit with regards to the energy supplied and expended. Write
several paragraphs in which you
- identify the requirements for the
establishment of an electric circuit and use two simple diagrams
to illustrate an example and non-example of a battery, wire and
light bulb arrangement which would and would not result in a
current; incorporate the diagram into your writing.
- discuss the role of the battery in an
electric circuit, explaining its importance to the flow of
- identify and elaborate upon several (at
least three) common misconceptions which people have concerning
the battery, charge flow, and electric circuits.
- construct a circuit diagram (refer to
circuit symbols given in the textbook) of a simple series circuit
with at least three resistors; on the diagram, neatly do the
- use an unbroken arrow to
show the direction of conventional current.
- mark and label (using letters A, B,
C, D, etc.) at least six individual points on the circuit
(excluding points present on the actual resistors.
- label a voltage for the battery and
resistance values for each individual resistor (do not use the
- discuss the energy changes which occur
to a single coulomb of charge as it makes a complete cycle through
the entire circuit diagrammed in the step above; be specific in
your discussion by identifying the specific points on the circuit
which you have already labeled; use both qualitative terms (a
gain or a loss in energy) and quantitative terms (e.g., 6
- compute and clearly state the current
flowing through the circuit as well as through each individual
resistor; finally compute and clearly state the voltage drop
across each individual resistor.
In your writing, use complete sentences and
the language of physics. The assignment should be less than 1 page
long and no more than 3 pages long.
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This page created by
Henderson and last updated on 5/28/98.