Experiment 1: PLOTTING the ELECTRIC FIELD

Experiment 1: PLOTTING THE ELECTRIC FIELD

Your field drawings are your data sheets. Indicate your lab partner(s) name(s) on the drawings.

Print the charge q in units of coulombs from Procedure 6 onto your field drawings.

Experiment 2: THE RC TIME CONSTANT

Source voltage, Vo ______

C = ______X 10-6 F R = 20 X 106 (composition resistor)

Q = CVcRint = Internal resistance of voltmeter

Vc = VRReq =



= ReqC = time constant

Vc(max) = Vo ______

calc. = ______

graph = ______

% error = ______

Data and Calculations Table:

Time (s) / VC (V) / Q (C)
VC(max) = Vo

Experiment 3: RESISTIVITY

Data and Calculations Tables:

Type of Wire / German Silver
Gauge of wire
Radius of Wire(cm)
Area of Wire(cm2)
Length of Wire(cm)
Voltage Across Wire(V)
Current Through Wire(A)
Experimental Resistivity(-cm)
Literature Value of Resistivity(-cm)
Percent Difference
Type of Wire / Copper
Gauge of wire
Radius of Wire(cm)
Area of Wire(cm2)
Length of Wire(cm)
Voltage Across Wire(V)
Current Through Wire(A)
Experimental Resistivity(-cm)
Literature Value of Resistivity(-cm)
Percent Difference

Experiment 4: THE WHEATSTONE BRIDGE

DATA SHEET: Wheatstone Bridge

Resistor

/ Rs
() / LL
(m) / LR
(m) / Rx
From Eq. 1
() / Rx
Nominal Value
() / % difference
Composition
Decade
Spool
Rheostat

Experiment 5: OHM'S LAW

Data Table 1: R = 50 

Reading / Voltage V
(Volts) / Current I
(Amperes) / Power
(Watts)
1
2
3
4
5
6
7

R = ______(Measured from graph)

Percent difference = ______

Data Table 2: R = 500 

Reading / Voltage V
(Volts) / Current I
(Amperes) / Power
(Watts)
1
2
3
4
5
6
7

R = ______(Measured from graph)

Percent difference = ______

Experiment 6: RESISTORS IN SERIES

AND PARALLEL

Data and Calculations Table 1: Series Circuit

Fig. / Across / Nominal
Resistance
() / Voltage
(Volts) / Current
(Amperes) / R = V/I
() / Resistance
From
Ohmmeter
() / % difference
2a / R1
2b / R2
2c / R3
2d / Req

Data and Calculations Table 2: Parallel Circuit

Fig. / Across / Nominal
Resistance
() / Voltage
(Volts) / Current
(Amperes) / R = V/I
() / Resistance
From
Ohmmeter
() / % difference
3a / R1
3b / R2
3c / R3
3d / Req

Experiment 7: JOULE HEAT

Mass of inner calorimeter cup ______

Water equivalent (W. E.) of lid assembly ______

Data and Calculations Table

Mass of water(g)
Initial temperature, (Ti)(oC)
Current, (I)(A)
Voltage, (V)(V)
Time(s)
Final temperature, (Tf)(oC)
Electrical energy(J)
Heat energy(cal)
Experimental value of the
electrical equivalent of heat(J/cal)
Known value of the electrical
equivalent of heat(J/cal)
Percent difference

Electrical Energy = Pt = (VI) t (Joules)

Heat Energy = mwcwT + [mLcL] T + mcccT (calories)

cw = 1.000 cal/gramoC

cc= 0.22 cal/gramoC

[mLcL] = mL(W.E.) cw = ______cal/oC

Experiment 8: THE MAGNETIC FIELD;

DATA SHEET: Your data consists of the drawings you have made.

Experiment 9: THE TANGENT GALVANOMETER;

Data and Calculations table for 45o deflection

Number
Of Turns / Deflection / Current
(A) / Binduced
(T) / BEarth
(T)
Right / Left / Average
10 / 45o
15 / 45o

Vector diagram for above case

Data and calculations table for 63.5o deflection

Number
Of Turns / Deflection / Current
(A) / Binduced
(T) / BEarth
(T)
Right / Left / Average
10 / 63.5o
15 / 63.5o

Vector diagram for above case

Experiment 10: CAPACITIVE & INDUCTIVE REACTANCE;

Data and Calculations Table 1: Inductive Reactance.

Frequency
f
(Hz) / Source
Voltage Vs
(V) / Voltage
Across
Resistor VR (V) / Voltage
Across
Inductor VL (V) / Current I
(A) / Inductive
Reactance XL
() / Theoretical
XL
() / % difference
1500
2000
2500
3000
3500
4000
4500

Data Table 2, Capacitive Reactance

Frequency
f
(Hz) / Source
Voltage Vs
(V) / Voltage
Across
Resistor VR (V) / Voltage
Across
Capacitor VC (V) / Current I
(A) / Capacitive
Reactance XL
() / Theoretical
XC
() / % difference
1000
1500
2000
2500
3000
3500
4000
4500

Experiment 11: THE OSCILLOSCOPE

Procedure 4:

Sweep rate ______ms/cmconvert to ______s/cm

1 cycle spans ______cm

Calculate the period (time for 1 cycle)

Period ______s/cycle = (______s/cm) x (______cm/cycle)

Data Table 1

Generator
Frequency
(Hz) / Vpeak-to-peak
(Volts) / Vo
(Volts) / Calculated Vrms
(Volts) / VrmsFrom Voltmeter
(Volts)
100
200
1000

Data Table 2

Generator
Frequency
(Hz) / Frequency From Oscilloscope / Frequency From Counter
Sweep Rate
(msec/cm) / (cm/cycle) / Period
(sec/cycle) / Frequency
= 1/ Period
(Hz) / Frequency From
Counter
(Hz) / Period From Counter
(sec/cycle)
100
200
1000
Trace of AC signal.
Horizontal: 1 ms / cm
Vertical: 1 V / div. /

Data Table 3: LISSAJOUS FIGURES (2 waves with the same amplitude and different frequency whole multiples.)

Channel 1
(horizontal)
Frequency 1 / 60 Hz / 100 Hz / 100 Hz / 100 Hz / 200 Hz / 300 Hz / 400 Hz
Channel 2
(vertical)
Frequency 2 / 60 Hz / 200 Hz / 300 Hz / 400 Hz / 100 Hz / 100 Hz / 100 Hz
Sketch
Trace

Experiment 12: THE VISIBLE SPECTRUM

Data Table A: Distance from grating to screen = L = 2.000 m

Wavelength / n / |xright|
(m) / |xleft|
(m) / xaverage
(m) / tan  /  / sin  /
633 nm / 1
2

Average value of d = ______nm

Data Table B: L ______(1)  = d sin

Color / x
(m) / tan  /  / sin  / 
(nm) / % difference
Violet / xu / u
xl
xu / l
u
Blue
xl
xu / l
u
Green
xl
xu / l
u
Yellow
xl
xu / l
u
Orange
xl
xu / l
u
Red
xl / l

Experiment 13: REFLECTION AND REFRACTION

AT PLANE SURFACES

Your drawings are part of your data.

Incident angle / 1 = 15o / 2 = 30o / 3 = 45o
Angle of Refraction
Refractive Index of glass (n)
n(average)

Experiment 14: THE THIN LENS

Focal length from step 1: ______m

A. Data for step 3: (do > 2f) Characteristics of Images

do = ______Real / Virtual