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Transcript
The “Live Action” Physics Review Game
Topic: Circuits
In a simple electric circuit, a 24-ohm resistor is
connected across a 6.0-volt battery. What is the
current in the circuit?
(1) 1.0 A
(2) 0.25 A
(3) 140 A
(4) 4.0 A
The electrical resistance of
a metallic conductor
is inversely proportional to
its
(1) temperature
(2) length
(3) cross-sectional area
(4) resistivity
An operating 100.-watt lamp
is connected to a
120-volt outlet. What is the
total electrical energy
used by the lamp in 60.
seconds?
(1) 0.60 J
(2) 1.7 J
(3) 6.0 × 103 J
(4) 7.2 × 103 J
A 3.0-ohm resistor and a 6.0-ohm resistor are
connected in series in an operating electric
circuit. If the current through the 3.0-ohm
resistor is 4.0 amperes, what is the potential
difference across the 6.0-ohm resistor?
(1) 8.0 V
(2) 2.0 V
(3) 12 V
(4) 24 V
In which circuit would current flow through resistor
R1, but not through resistor R2 while switch S is
open?
A 5.0-ohm resistor, a 10.0-ohm resistor, and a 15.0-ohm
resistor are connected in
parallel with a battery. The current through the 5.0-ohm
resistor is 2.4 amperes.
Calculate the amount of electrical energy expended in the
5.0-ohm resistor in 2.0 minutes. [Show all work,
including the equation and substitution with units.]
A 50.-ohm resistor, an
unknown resistor R, a 120volt source, and an ammeter
are connected in a complete
circuit. The ammeter reads
0.50 ampere.
Calculate the equivalent resistance of
the circuit. [Show all work, including
the equation and substitution with
units.]
Determine the resistance of resistor R.
Calculate the power dissipated by the 50.ohm resistor. [Show all work, including
the equation and substitution with units.]
In the space in your answer booklet, draw a
diagram of an operating circuit that includes:
• a battery as a source of potential difference
• two resistors in parallel with each other
• an ammeter that reads the total current in the
circuit
A 15-ohm resistor, R1, and a 30.-ohm resistor, R2, are to be
connected in parallel
between points A and B in a circuit containing a 90.-volt
battery.
Complete the diagram in your answer booklet to show the
two resistors connected in parallel between
points A and B.