UTA PHYS 1442 Lab Final Questions
and Answers A+ Graded (2025)
To .measure .current .using .a .digital .multimeter .the .probes .of .the .meter .would .be
.placed ._________ .the .component.
A) .in .parallel .with .B) .in .series .with .C) .adjacent .to .- .CORRECT .ANSWER-B) .in
.series .with
A .reading .of .2.80 .is .displayed .when .measuring .the .resistance .of .a .resistor. .The
.range .setting .is .set .to .20k. .What .is .the
resistance .of .the .resistor?
A) .2800 .B) .2.80 .C) .5.60 .D) .5600 .- .CORRECT .ANSWER-A) .2800
A .waveform .displayed .on .an .oscilloscope .is .measured .to .have .6.3 .vertical
.divisions .and .4.7 .horizontal .divisions .for .one
complete .cycle. .The .Volt/div .knob .is .set .to .0.2 .V/div .and .the .Time/div .knob .to
.0.5ms/div. .Determine .the .peak .to .peak
voltage .of .the .waveform.
A) .3.15 .V .B) .2.35 .V .C) .0.94 .V .D) .1.26 .V .- .CORRECT .ANSWER-D) .1.26 .V
Electric .field .lines .are .____ .equipotential .lines
A) .tangent .to .B) .perpendicular .to .C) .the .same .as .D) .parallel .to .- .CORRECT
.ANSWER-B) .perpendicular .to
A .charge .of .2 .C .is .moved .3 .cm .along .an .equipotential .surface .that .has .a .value
.of .4.56V. .How .much .work .was
required .to .move .this .charge .along .the .surface?
A)0 .J .B) .0.27 .J .C) .2.7 .J .D) .27 .J .- .CORRECT .ANSWER-A) .0
The .same .charge .is .then .moved .a .distance .of .2 .cm .to .another .equipotential
.line .that .has .a .value .of .3.21 .V. .How .much
work .was .required .to .move .this .charge?
A) .0 .J .B) .0.27 .J .C) .2.7 .J .D) .27 .J .- .CORRECT .ANSWER-C) .2.7 .J
Three .capacitors .are .connected .in .series .they .have .values .of .22 .F, .33 .F .and .47
.F. .Determine .the .equivalent .capacitance
for .the .series .circuit.
A) .0.1 .F .B) .10 .F .C) .13 .F .D) .102 .F .- .CORRECT .ANSWER-B) .10 .F
, If .the .capacitors .in .question .U17Q1 .are .instead .connected .in .parallel .what
.would .be .the .new .equivalen .capacitance.
A) .0.1 .F .B) .10 .F .C) .13 .F .D) .102 .F .- .CORRECT .ANSWER-D) .102 .F
You .measure .the .resistance .of .a .normally .1500 .ohm .resistor .and .it .measures .to
.be .infinite .resistance. .You
conclude .that .the .resistor .is ._________
A)open .B) .shorted .C) .the .meter .is .broken .- .CORRECT .ANSWER-A) .open
You .have .the .following .three .resistors .connected .in .parallel. .What .is .the
.equivalent .resistance .for .this
circuit? .R1 .= .100 ., .R2 .= .50 ., .and .R3 .= .250
A) .400 .B)2.5x10-3 .C)3.4x10-2 .D) .29 .- .CORRECT .ANSWER-D) .29
Kirchoff's .voltage .rule .states .that:
A) .The .algebraic .sum .of .all .the .resistance .in .a .circuit .is .zero.
B) .The .product .of .current .and .resistance .is .the .voltage.
C) .The .algebraic .sum .of .the .change .in .potential .in .a .complete .transversal .of .a
.loop .in .a .circuit .must .be .zero.
D) .The .algebraic .sum .of .the .currents .entering .a .junction .equals .the .algebraic
.sum .of .the .currents .leaving .the
junction. .- .CORRECT .ANSWER-C) .The .algebraic .sum .of .the .change .in .potential
.in .a .complete .transversal .of .a .loop .in .a .circuit .must .be .zero
Using .three .different .voltmeters .a .group .of .students .measured .the .same .emf
.source. .V1 .measured .1.52 .v,
V2 .measured .1.43 .v .and .V3 .measured .1.35 .v .which .voltmeter .draws .the .most
.current .from .the .emf .source.
A) .V1 .B) .V2 .C) .V3 .D) .they .all .draw .the .same .amount .of .current .- .CORRECT
.ANSWER-C) .V3
A .standard .cell .with .an .emf .of .1.018 .volts .when .placed .in .a .potentiometer
.circuit .was .found .to .have .an
arbitrary .length .Lstd .of .41.3. .An .unknown .cell .is .then .placed .in .the .circuit .and
.a .decade .box .set .to .450
ohms .is .in .parallel .with .the .unknown .cell. .The .circuit .was .adjusted .to .a .null
.and .the .arbitrary .length .of .the
unknown .cell .with .this .load .was .found .to .be .Lunk .= .58.8. .What .is .the .terminal
.voltage .VT?
A) .0.70 .v .B) .1.45 .v .C) .1.42 .v .D) .0.715 .v .- .CORRECT .ANSWER-B) .1.45 .v
Frequency .is .calculated .by_________ .and .has .units .of .________. .But .if .you
.don't .have, .period, .its .calculated .by_______. .- .CORRECT .ANSWER-1/period .and
.hertz, .horizontal .divisions .x .time/div .knob .setting .(microseconds)
When .subjected .to .a .sinusoidal .voltage, .the .reactance .of .a .capacitor
A) .decreases .as .the .frequency .of .the .voltage .source .increases
B) .is .not .affected .by .the .frequency .of .the .voltage .source
C) .increases .as .the .frequency .of .the .voltage .source .increases
and Answers A+ Graded (2025)
To .measure .current .using .a .digital .multimeter .the .probes .of .the .meter .would .be
.placed ._________ .the .component.
A) .in .parallel .with .B) .in .series .with .C) .adjacent .to .- .CORRECT .ANSWER-B) .in
.series .with
A .reading .of .2.80 .is .displayed .when .measuring .the .resistance .of .a .resistor. .The
.range .setting .is .set .to .20k. .What .is .the
resistance .of .the .resistor?
A) .2800 .B) .2.80 .C) .5.60 .D) .5600 .- .CORRECT .ANSWER-A) .2800
A .waveform .displayed .on .an .oscilloscope .is .measured .to .have .6.3 .vertical
.divisions .and .4.7 .horizontal .divisions .for .one
complete .cycle. .The .Volt/div .knob .is .set .to .0.2 .V/div .and .the .Time/div .knob .to
.0.5ms/div. .Determine .the .peak .to .peak
voltage .of .the .waveform.
A) .3.15 .V .B) .2.35 .V .C) .0.94 .V .D) .1.26 .V .- .CORRECT .ANSWER-D) .1.26 .V
Electric .field .lines .are .____ .equipotential .lines
A) .tangent .to .B) .perpendicular .to .C) .the .same .as .D) .parallel .to .- .CORRECT
.ANSWER-B) .perpendicular .to
A .charge .of .2 .C .is .moved .3 .cm .along .an .equipotential .surface .that .has .a .value
.of .4.56V. .How .much .work .was
required .to .move .this .charge .along .the .surface?
A)0 .J .B) .0.27 .J .C) .2.7 .J .D) .27 .J .- .CORRECT .ANSWER-A) .0
The .same .charge .is .then .moved .a .distance .of .2 .cm .to .another .equipotential
.line .that .has .a .value .of .3.21 .V. .How .much
work .was .required .to .move .this .charge?
A) .0 .J .B) .0.27 .J .C) .2.7 .J .D) .27 .J .- .CORRECT .ANSWER-C) .2.7 .J
Three .capacitors .are .connected .in .series .they .have .values .of .22 .F, .33 .F .and .47
.F. .Determine .the .equivalent .capacitance
for .the .series .circuit.
A) .0.1 .F .B) .10 .F .C) .13 .F .D) .102 .F .- .CORRECT .ANSWER-B) .10 .F
, If .the .capacitors .in .question .U17Q1 .are .instead .connected .in .parallel .what
.would .be .the .new .equivalen .capacitance.
A) .0.1 .F .B) .10 .F .C) .13 .F .D) .102 .F .- .CORRECT .ANSWER-D) .102 .F
You .measure .the .resistance .of .a .normally .1500 .ohm .resistor .and .it .measures .to
.be .infinite .resistance. .You
conclude .that .the .resistor .is ._________
A)open .B) .shorted .C) .the .meter .is .broken .- .CORRECT .ANSWER-A) .open
You .have .the .following .three .resistors .connected .in .parallel. .What .is .the
.equivalent .resistance .for .this
circuit? .R1 .= .100 ., .R2 .= .50 ., .and .R3 .= .250
A) .400 .B)2.5x10-3 .C)3.4x10-2 .D) .29 .- .CORRECT .ANSWER-D) .29
Kirchoff's .voltage .rule .states .that:
A) .The .algebraic .sum .of .all .the .resistance .in .a .circuit .is .zero.
B) .The .product .of .current .and .resistance .is .the .voltage.
C) .The .algebraic .sum .of .the .change .in .potential .in .a .complete .transversal .of .a
.loop .in .a .circuit .must .be .zero.
D) .The .algebraic .sum .of .the .currents .entering .a .junction .equals .the .algebraic
.sum .of .the .currents .leaving .the
junction. .- .CORRECT .ANSWER-C) .The .algebraic .sum .of .the .change .in .potential
.in .a .complete .transversal .of .a .loop .in .a .circuit .must .be .zero
Using .three .different .voltmeters .a .group .of .students .measured .the .same .emf
.source. .V1 .measured .1.52 .v,
V2 .measured .1.43 .v .and .V3 .measured .1.35 .v .which .voltmeter .draws .the .most
.current .from .the .emf .source.
A) .V1 .B) .V2 .C) .V3 .D) .they .all .draw .the .same .amount .of .current .- .CORRECT
.ANSWER-C) .V3
A .standard .cell .with .an .emf .of .1.018 .volts .when .placed .in .a .potentiometer
.circuit .was .found .to .have .an
arbitrary .length .Lstd .of .41.3. .An .unknown .cell .is .then .placed .in .the .circuit .and
.a .decade .box .set .to .450
ohms .is .in .parallel .with .the .unknown .cell. .The .circuit .was .adjusted .to .a .null
.and .the .arbitrary .length .of .the
unknown .cell .with .this .load .was .found .to .be .Lunk .= .58.8. .What .is .the .terminal
.voltage .VT?
A) .0.70 .v .B) .1.45 .v .C) .1.42 .v .D) .0.715 .v .- .CORRECT .ANSWER-B) .1.45 .v
Frequency .is .calculated .by_________ .and .has .units .of .________. .But .if .you
.don't .have, .period, .its .calculated .by_______. .- .CORRECT .ANSWER-1/period .and
.hertz, .horizontal .divisions .x .time/div .knob .setting .(microseconds)
When .subjected .to .a .sinusoidal .voltage, .the .reactance .of .a .capacitor
A) .decreases .as .the .frequency .of .the .voltage .source .increases
B) .is .not .affected .by .the .frequency .of .the .voltage .source
C) .increases .as .the .frequency .of .the .voltage .source .increases
