Question

1. The objectives of this lab are (1) to determine the actual (A) total resistance of three resistors connected in series and compare it with the experimental (E ) value of total resistance (2) to determine the actual (A) total resistance of three resistors connected in parallel and compare it with the experimental(E ) value of total resistance II. Apparatus(Equipment): Voltage source, ammeter that measures current , voltmeter that measures voltage. II. Procedure: Three resistors have actual manufacturer given values Ri= 60 ohms, R2= 30 ohms and R3=80 ohms. In the first part of the experiment, the three resistors were connected in series and a total voltage=160 volts was applied across the series resistor combination. A total current I tot= 1.046 Ampere was measured for the series connection. In the second part of the experiment, the three resistors were connected in parallel and the same amount of total voltage=160 volts was applied across the parallel combination. A total current lot= 10.87 Ampere was measured for the parallel combination. The results of the experiment are indicated in the raw data below. IV. Raw Data: The voltage applied, connection type, and the corresponding total currents are indicated in the raw data table below Connection Total Voltage Experimental Total Actual Total Total current (Ampere) Resistance (Volts) Resistance (Ohms) (Ohms) SERIES 1.046 152.96 PARALLEL 160 10.87 14.71 16 V. DATA ANALYSIS: (1)Using Ohm's Law and showing your steps, calculate the value of the experimental (E) total resistance for the series connection. Fill in the table (2) Using the manufacturer's values of resistances, determine the actual (A) total resistance for the series connection(fill in the table) and calculate the percent error between the actual and experimental values . (3) Using Ohm's Law and showing your steps, calculate the value of the experimental (E ) total resistance for the parallel connection and fill it in the table (4) using the manufacture's value of resistances, determine the actual (A) total resistance for the parallel connection (fill in the table) and determine the percent error between the actual and experimental values. The formula for calculating percent error is: Percent error = ACTUAL-EXPERIMENTAL X 100% = A-E А X100 % ACTUAL Series % error: ((170-152.96)/170) x 100%= 10.02% error Parallel % error: ((16-14.71)/16) x 100%= 8.06% error

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Answer 1

resistors, in parallel more (1) In parallel combination of effective resistance of circuit is lesser then the last resistance of any resister connected parallel, this current flows Circuit. (2) IRI v= V (RitratR3) 160 (60+30+ +86) 0.941x60 56.47 28.235V - 0.941x80 = 75.3 v XR, x Go - 0.9414 30 - V3 + + 1 tl (3) 1 ㅗ Go 1 48 Req 30 ㅗ 0.0833 Roq :v=Inow =) Req - 160 - I (12) I total 13.33 A