phys quiz 2

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Cosumnes River College *

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360

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Physics

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Dec 6, 2023

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docx

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6

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Question 1 4 / 4 pts Find the total resistance for the circuit below. Correct! 14,1 Ω 29.0 Ω 6.55 Ω 2.93 Ω Question 2 4 / 4 pts In the circuit below, what would the voltage be across R4?
Correct! 10 V 6.0 V 50 V 20 V Question 3 4 / 4 pts Find the resistance that must be placed in parallel with a 25.0 Ω galvanometer having a 50.0 µA sensitivity to allow it to be used as an ammeter with a 300-mA full-scale reading. Correct! 4.17x10 -3 6.28x10 -3 1.27x10 -3 8.63x10 -3
Question 4 4 / 4 pts The timing device in an automobile’s intermittent wiper system is based on an RC time constant and utilizes a 0.600 µF capacitor and a variable resistor. Over what range must be made to vary to achieve time constants from 2.00 to 15.0 s? 4.00 MΩ to 30.0 MΩ 0.300 µΩ to 0.0400 µΩ 0.250 µΩ to 0.0600 µΩ ct! 3.33 MΩ to 25.0 MΩ Question 5 4 / 4 pts Find how much time is required to discharge a 250 µF capacitor through a 500 Ω resistor down to 1.00% of its original voltage. 0.892 s 32.8 µs Correct! 0.576 s 15.6 µs Question 6 4 / 4 pts
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