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5. A piece of metal wire has a resistance of 50 ohms. When it is stretched to 3 times of its length, what will its new resistance be? a. 150 2 b. 300 2 c. 16.7 Q d. 450 2

5. A piece of metal wire has a resistance of 50 ohms. When it is stretched to 3 times of its length, what will its new resistance be? a. 150 2 b. 300 2 c. 16.7 Q d. 450 2

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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ANO LTE 47% O 7:22 PM 3 pr d. 8 pF, 4 pF 5. A piece of metal wire has a resistance of 50 ohms. When it is stretched to 3 times of its length, what will its new resistance be? a. 150 2 In the RC (series) circuit, R= 1.2 M2 and C= 5.00 µF. It is connected to a 30 volt power source with a b. 300 2 с. 16.7 2 d. 450 2 switch S. 6. Find the time constant, t= ? R. C a. 3 sec ·b. 6 sec c. 9 sec d. 4.17 sec 7. When the switch is closed, how long will it take for the capacitor to reach 25 volts on the positive plate? a. 5.6 sed b. 8.2 sec с. 10.8 sec d. 12.3 sec 8. What is the current in the circuit when the capacitor reaches 25 volts? 2.12 HA b. 4.17 HA c. 9.3 μΑ 12.4 HA 9. A Galvanometer has an internal resistance of 120 ohm with a maximum allowed current of 250 µA. If
Transcribed Image Text:ANO LTE 47% O 7:22 PM 3 pr d. 8 pF, 4 pF 5. A piece of metal wire has a resistance of 50 ohms. When it is stretched to 3 times of its length, what will its new resistance be? a. 150 2 In the RC (series) circuit, R= 1.2 M2 and C= 5.00 µF. It is connected to a 30 volt power source with a b. 300 2 с. 16.7 2 d. 450 2 switch S. 6. Find the time constant, t= ? R. C a. 3 sec ·b. 6 sec c. 9 sec d. 4.17 sec 7. When the switch is closed, how long will it take for the capacitor to reach 25 volts on the positive plate? a. 5.6 sed b. 8.2 sec с. 10.8 sec d. 12.3 sec 8. What is the current in the circuit when the capacitor reaches 25 volts? 2.12 HA b. 4.17 HA c. 9.3 μΑ 12.4 HA 9. A Galvanometer has an internal resistance of 120 ohm with a maximum allowed current of 250 µA. If
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