5. A student obtains the following three values for the measurement of resistance in an Ohm's Law experiment: 12.1 2 11.5 2 11.7 N The accepted value for resistance is 14 2 ±2% Describe their measurements using the terms precision and accuracy. Provide reasoning for your description.
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- What is the resistance of Part A A 1.0-m-long gold wire that is 0.30 mm in diameter? Express your answer in ohms. - ΑΣΦ R = Submit Part B Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining ? R = A 90-cm-long piece of carbon with a 1.7 mm x 1.7 mm square cross section? Express your answer in ohms. - ΑΣΦ Ω ? Ω12 13 R1 E2 R3 R2 ε For the circuit shown above, the emf of the batteries and the resistances are listed below. E1 = 36 V, E2 = 6 V, R1 = 7 0, R2 = 15 0, R3 = 12 Q. Determine 13=? Please express your answer in units of Amperes (A) with two decimal places. If you a find a negative value, please don't forget the minus sign.Physics Find the total resistance and total current of the circuit Given: D1=107.57 ohms, D2= 159.04 ohms, L1=18.48 ohms.
- What is the equivalent resistance of this circuit? R1= 13 kΩ. All other resistor values are displayed in diagram. Keep answer in kΩgure www.i A www Open: 1.636 A Closed: 1.565 A 5.0 Ω 10.02 1 of 1 Part A Express your answer in volts. ε = What is the emf of the battery in the figure (Figure 1)? Submit Part B r = 195| ΑΣΦ Submit Request Answer What is the internal resistance of the battery in the figure? Express your answer in ohms. IVE ΑΣΦ Provide Feedback www. P Request Answer ? www. ? V ΩDirections: Write the letter of your answer on a separate sheet of paper.
- To what value would you have to raise the temperature of a copper wire (originally at 20 °C) to increase its resistance by 18 % ? Assume the temperature coefficient of resistivity of copper is 0.0039 (°C) 1. Express your answer using two significant figures. ? Tinal = °C Submit Request AnswerThe tolerance is ±1 in the 3rd significant digit. "box your answer"The label on a battery-powered radio recommends the use of a rechargeable nickel-cadmium cell (nicads), although it has a 1.25-V open-circuit voltage, whereas an alkaline cell has a 1.58-V open-circuit voltage. The radio has a 3.2 0 resistance. Hint a. With a nicad cell, having an internal resistance of 0.04 02, what is the voltage supplied to the radio, if a single nicad cell is used? The voltage supplied to the radio is b. With an alkaline cell, having an internal resistance of 0.2 , what is the voltage supplied to the radio, if a single alkaline cell is used? The voltage supplied to the radio is The radio's effective resistance is lowered when its volume is turned up. At what value of radio's resistance does a nicad cell begin to supply a greater voltage to the radio than an alkaline cell? Hint for (c) When the radio has an effective resistance of voltage can be obtained with a nicad cell. V. V. 2 or smaller, a greater
- 1. An experiment was performed to investigate how the resistance of a material wire varies with the temperature. The following data was recorded. Resistance/2 Temperature Theory suggests that the resistance of the wire is related to its temperatui by the expression, R = R,(1 + at), where Ro, is the resistance at a temperature, 0°C, and a is a constant. 330.0 10 340.0 20 (a) Plot a suitable graph from which Ro and a could be obtained. 350.0 30 (b) Use the graph to obtain the values of R, and a (c) Say whether this material is a conductor or semiconductor. 360.0 40 370.0 50 380.0 60 389.0 70 400.0 80 410.0 851. A network of resistors is connected to a 16 V battery with internal resistance of 10, as shown in the following figure. Compute the equivalent resistance of the network. 4Ω A www 4Ω 16 V H Β 19 1Ω ww C 12 Ω MM wwwww 6Ω DDetermine the equivalent resistance between terminals a and b. 02(1).png ... R1 R2 R3 1 Ohm 2 Ohms 3 Ohms R4 R5 R6 4 Ohms 5 Ohms 6 Ohms (A) 6.3333 2 (B) 6.3498 n 6.2714 2 D 6.2987 2 ww b-
