1.) Use the exact values you enter to make later calculations. Part A A group of

Question

1.) Use the exact values you enter to make later calculations.

Part A
A group of students performed the same "Ohm's Law" experiment that you did in class. They obtained the following results:

where V is the voltage difference across the resistor and I is the current traveling through the resistor at the same time.

(a) Analyze the data. (You will not submit this spreadsheet. However, the results will be needed later in this problem.)

(b) Determine the slope and y-intercept of your graph, and report these values below. (Use ohm for .)

Part B
Your mischievous lab partner takes the resistor that you just experimented with and assembles it in a network with one other resistor and places them inside a black box. He challenges you to tell him the configuration of the resistors inside the box. Being an industrious physics student you connect the leads of the black box to your power source, voltmeter (in parallel), and ammeter (in series) and take the following simultaneous measurements.

Use the above measurements to find the equivalent resistance of the arrangement. (Use ohm for .)
Req = 3

Based on your value of the equivalent resistance, what must the arrangement be?

in series in parallel    

Part C
Now that you've answered his challenge, your lab partner asks you to give the resistance of the resistor that he added to the one you experimented with. Using the information you obtained in parts A and B, predict this value of the resistance of the second resistor.

2)You are given two resistors, an ammeter, a voltmeter, and a voltage source. By connecting each resistor singly to the voltage source and taking voltage difference and current measurements on the single resistor, you find the following data for each resistor.

Using this data, first find the resistance of each resistor and then calculate the following.

(a) The current that would pass through the network of resistors if they were arranged in series and connected to an 8.500 V voltage source.
1

(b) The current through the circuit if the resistors were arranged in parallel and connected to the same 8.500 V source from part (a).
2

3.)(a) What resistance is indicated by the color codes below? (When entering units, use ohm for .)

(i) Brown/White/Brown
1

(ii) Orange/Blue/Orange
2

(b) What color bands would be printed on resistors with the resistances below?

(i)    800 k

(ii)    7.6 k

Explanation / Answer

Part A)    Resistance = V/I

                                 = 5/0.035 = 142.85 ohm

=> slope =   142.85

=> y intercept = 2

Part B)     the equivalent resistance of the arrangement = 2.9 + 0.1 = 3 ohm

=> The arrangement is in series .

Part C)    current = 0.5 A

                 current =    0.236 A

             Brown/White/Brown = 760 kohm

           Orange/Blue/Orange = 850 kohm

     red/white/brown

    orange/white/orange

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.