Lab 3 Electric Circuits

Lab 3 Electric Circuits - Lab 3 Electric Circuits Part 1...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Lab 3 Electric Circuits Part 1 Lab 3 Report (100 points) Name: 1214 PHYS Day and Time: Station Cheek-in: sten J2 ‘2 a; 7‘ ,5 iii fii'f“l\‘;>x:“¢ y k Filament L1 (A Resistance (9) Power (Watts) I How did the color of the filament and the brigh voltage through the bulb. (2 pts) f i. ii - g & it i ,7 4/)! ,z.» V In (J g. If. VD: 1L3" 1 », {i 7 , 5y 7 x? a)» ‘Vbxi‘é‘j (k I $1 ‘f ‘3' d‘ X i \f v I ‘11.“: t A a r 9% ~ (A) f: Resistance (9) Power (Watts) 39 tness of the bulb change as you increased the Lab 3 Electric Circuits Part 1 \ I How did the color of the filament and the brightness of the bulb change as you increased the '\ voltage through the bulb. (2 pts) \ {45.2 f as. r ., I‘: _ ' 333 a k" ll? 3 f fir r‘giflfi g L t f} f g 1'; f j t J, I How do the brightness changes and colors for the carbon bulb compare to the tungsten? (2 pts) W’ i 1 _‘ , M . v M *1 ‘3‘ i f Li. n *1 J ‘ i a, ‘1 a 3" L f 1 / t g or i 1;:- t 3 i» mi *3 " mi Resistance (9) Power (Watts) Questions and Exercises 1. Calculate the resistance(s) of the light bulbs and the Wire wound resistor for the various voltages and currents recorded in Tables 1, 2, and 3. Record the calculated values of resistance in Tables 1, 2, and 3, respectively. Show Work for l. (4 pts) 0 " ’ W , N W’ M I ‘ i x .1) f f’” 2“. site/1 i :W/ I x E I ,fixhwim‘DWD7 40 Lab 3 Electric Circuits Part 1 2. Show that the unit of power, the watt, is equal to the product of the unit of current, the ampere, and the unit of emf and potential difference, the volt. (3 pts) C X ‘3 = watts (amps) X (volts) = wire wound resistor for the various I Calculate the power of the light bulbs and the ated values of voltages and currents recorded in Tables 1, 2, and 3. Record the calcul resistance in Tables 1, 2, and 3, respectively. Show work for 1. (4 pts) electrical circuits takes the form of power supplied to the t. Your current vs. voltage data and increased the 3. Conservation of energy applied to circuit equals power used or dissipated by the circui power calculations show that the variac supplies more and more power as you voltage across the terminals of the variac. I How is the electrical energy supplied by the variac dissipated by the light bulbs? (4 pts) lbs use more and more power? carbon filament light bu lor of the filaments and the I Do the tungsten filament and f your observations of the co Explain your answer in terms 0 brightness of the bulbs. (3 pts) ’ I; I r ,, ,H V65 3 4‘7 If X. 0‘9"; at?" If x r . . bqif CA Air. x, .17) “,1 4f. 1/ pi/Lgvy~{£ :‘(Vlvgtggf z" 41 Lab 3 Electric Circuits Part 1 4. Which of the three circuit elements clearly obeys Ohm’s Law? I Explain your answer in terms of the current vs. voltage data for the circuit element and in terms of the calculated values of resistance in the tables. (4 pts) v‘ al r' w. x”: if " 1 “: ‘p 5 - “I .- q 0 ’ (3;: '“pf'rtrri. w ‘L’ w 3n 3 .' 1;} f.“ 1,, if w r i . , . f ; ‘ a?! u s. ’ 1%); q 5 :3? z 4 r f, f, 1' l y ,, ,r .. g 55 “I ** r dwrév 4 v / ’ / I Determine the resistance of the circuit element from the slope of the line of best fit to the plotted current vs. voltage data. Note that the slope of the line of best fit is not equal to the resistance of the circuit element! The slope calculation procedures outlined on page 8 of the Graphical Analysis of Data Section must be strictly adhered to in order to receive any partial credit. (10 pts) R= 62333-9 I Calculate the percent difference between the value of the resistance as determined from the slope of the line of best fit to the current vs. voltage data and the average of the calculated values of the resistance in the tables. Show your work. (2 pts) % zjfixfi‘ : /pg3mé§ Weave f \ {$1 ’2. .8 Z " a __._x—»-—-—""““““? / — .‘ i r A . g ") 14W“.me “ 1 i r’ if “I: (ligtjcafllglfl l W 1 l I} g) /e f (it? ‘5; 42 D. T; w; a» 1 . .47.: km a . a. NQ‘Em \ Sims; ,. m... -TWEE v. 8.. , E om§o> 8.83 8.02 8.8 8.8 8.3 8.8 8.0 .. 8.8 - 8.8 8.8 m m w m $8 8.8 [III 8.8 towflwmm 6:303 253 wm§o> .m> E250 E wm§o> 86$ 8.02 8.8 8.8 8.3 rllliliiliLlilnill L _ Flilll oodN {1111111111 006 cod mod Ed 2.0 omd mmd I 8.0 v 8.0 1 ovd Acwywmcst mm§o> .m> E250 mvd (v) 111611113 oodNr 00.02 E mm§o> 8.8 8.8 8.3 €09.68 mmm:o> .w> E250 oodN 00.0 006 mod 3.0 3.0. 0N6 mmd omd mmd ovd (v)1ueun3 ...
View Full Document

This note was uploaded on 01/10/2012 for the course PHYS 2114 taught by Professor Bandy during the Spring '08 term at Oklahoma State.

Page1 / 7

Lab 3 Electric Circuits - Lab 3 Electric Circuits Part 1...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online