Physics 222 Test 1 Multiple Choice \Exam prep, test bank &
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Two capacitors have C1 = 4 pF, C2 = 4 pF
an equivalent
capacitance of 8 pF if
connected in
parallel, and 2 pF, if
connected in series. Find C1
and C2.
The figure below shows 5
different ways to
connect a light bulb to a
battery with wires. Which of
the bulbs will light up?
Three resistors connected I(T) = I1 = I2 = I3
IN SERIES carry currents
labeled I1, I2, I3,
respectively.
Which of the following
expresses the value of the
total current I(T) in the
system made up of the
three resistors?
A solid, conducting sphere of r = 0 (center of the sphere)
radius R is positively
charged. Of the following
distances from the center of
the sphere, which location
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will have the greatest
electric potential? (Take V = 0
at r = infinity)
The immediate cause of 4472 V
many deaths is ventricular
fibrillation, an uncoordinated
quivering of the heart as
opposed to
proper beating. An electric
current discharges to the
chest can cause
momentary paralysis of the
heart muscle, after which
the heart will sometimes
start organized beating
again. A defibrillator is a
device that applies a strong
electric shock to the chest
over a time interval of a
few
milliseconds. Assume that an
ENERGY of 300 J is to be
delivered from the
defibrillator, having a 30.0
microFarad CAPACITANCE.
To what POTENTIAL
DIFFERENCE must the
defibrillator be charged.
Equipotential lines around A: to the
two point charges are right B:
shown. up
Equipotential line around The charge at B is positive and the charge at A is negative.
several point charge are
shown.
Which of the charge E
configurations depicted (The potential is positive very close to a positive charge
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would give rise to potential and negative very close to a negative charge.)
shown below?
A bird sits on a high-voltage The whole bird is at approximately the same potential,
line. Why does the bird not so there is no electric field across it.
get hurt?
A wire carries a current I as out of the page.
shown below. The magnetic
field at the position P points
A STATIONARY positive The magnetic force will be zero.
charge +Q is located in a
magnetic field B, which is
directed toward the right as
indicated. The
direction of the magnetic
force on Q is:
A positive charge is moving into the page
with velocity V in a region
with magnetic field B. What
is
the direction of the force on
the particle?
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