Module 7 - Chapter Quiz_ PHYS 102 Explorations in Physics - Oct 2023 - Online

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11/28/23, 8:29 PM Module 7 - Chapter Quiz: PHYS 102 Explorations in Physics - Oct 2023 - Online https://erau.instructure.com/courses/164880/quizzes/575394 1/5 Due Dec 3 at 11:59pm Points 100 Questions 10 Available after Nov 27 at 12am Time Limit None Allowed Attempts 3 Instructions This quiz is intended to test you on the information you have acquired in this module. Before starting the quiz, make sure you have completed all module activities with additional emphasis on the following: Read Chapter 7 and be sure you understand the solved problems in the chapter. If you have not already, actively (with paper and pencil) work through the Module 1 first video (entitled Solving Physics Problems). Successfully complete the problems in the textbook End-of-Chapter Problems section (note that the End-of-Chapter Problems section is different from the End-of-Chapter Questions section). This is an essential step in preparing for this Chapter Quiz. Study the problem-solving videos. Quiz Instructions 1. Use the conversion factors found in the back of the textbook (not those found on the internet). 2. Answers should be solved in SI units unless other instructions are given in the question. 3. Do not include units in your answer ( numbers only ). 4. Express answers to 3 significant figures unless other instructions are given in the question. 5. To enter an answer in scientific notation in Canvas, use lower-case "e". For example, 6.02 x 10 would be entered as 6.02e+23. A. "+" is optional for positive exponents. B. Do not include spaces in your answer. 6. The End-of-Chapter List of Important Equations is helpful. Questions are presented one at a time. Use caution in navigating back to a previous question – answers are only saved by selecting the Save button or navigating forward to the next question. Attempts: You will have three attempts to take this quiz. After a first wrong answer a hint is provided to help get started but additional steps, including unit conversions, may be needed. Time limit: None Quiz Review: After submitting your quiz, check your results. Incorrect answers will be marked, but the correct answers to those questions will not be shown until your final attempt.  This activity supports Module Objective(s) 1-9 and Learning Outcome(s) 2-4. (https://erau.instructure.com/courses/164880/pages/module-7-overview-and-objectives) Module 7 Electricity Chapter Quiz 23 Take the Quiz Again

11/28/23, 8:29 PM Module 7 - Chapter Quiz: PHYS 102 Explorations in Physics - Oct 2023 - Online https://erau.instructure.com/courses/164880/quizzes/575394 2/5 Attempt History Attempt Time Score LATEST Attempt 1 10 minutes 90 out of 100  Correct answers are hidden. Score for this attempt: 90 out of 100 Submitted Nov 28 at 11:29pm This attempt took 10 minutes. 10 / 10 pts Question 1 An electrical component has 5 volts across it and draws 608 milliamps of current. What is the electronic component's power consumption (in watts)? 3.04 10 / 10 pts Question 2 An electric heater uses 10 amps when connected to 120 V. How much energy (in joules) does it use during 33 min of operation? 2,376,000 10 / 10 pts Question 3 A 120 V circuit in a house is equipped with a 20 A circuit breaker that will “trip" (i.e., shut off) if the current exceeds 20 A. How many 542 watt appliances can be plugged into the sockets of that circuit before the circuit breaker trips? (Note that the answer is a whole number as fractional appliances are not possible!), 4 10 / 10 pts Question 4

11/28/23, 8:29 PM Module 7 - Chapter Quiz: PHYS 102 Explorations in Physics - Oct 2023 - Online https://erau.instructure.com/courses/164880/quizzes/575394 3/5 A lightning strike lasts 0.04 s and involves a flow of 243 C. What is the current (in amps)? 6,075 10 / 10 pts Question 5 An incandescent (filament) lightbulb is rated at 112 watts when connected to 120 volts. What is the resistance of the lightbulb (in ohms)? 128.57 10 / 10 pts Question 6 Three lightbulbs are connected in a parallel circuit with a 12-volt battery. The resistance of each bulb is 26.5 ohms. What is the current (in amps) produced by the battery? 1.36 0 / 10 pts Question 7 Incorrect Incorrect An electric clothes dryer is rated at 3000 W. How much energy (in kWh) does it use in 23 min? 69

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11/28/23, 8:29 PM Module 7 - Chapter Quiz: PHYS 102 Explorations in Physics - Oct 2023 - Online https://erau.instructure.com/courses/164880/quizzes/575394 4/5 The following general hints are provided, if needed. Please note that unit conversions, if necessary, may not be included in the hints. Given: Power = P Time = t Find: Energy Use: Energy = Pt Given units must be converted to the units asked for (kWh). 10 / 10 pts Question 8 If 37,412 J of energy is stored in a 1.5 volt flashlight battery and a current of 3 A flows through the flashlight bulb, how long (in minutes) will the battery be able to deliver power to the flashlight at this level? 138.16 10 / 10 pts Question 9 A resistor in an electronic circuit has a resistance of 22,056 ohms and has 300 microamps flowing through it. What is the voltage across the resistor (in volts)? 6.62 10 / 10 pts Question 10 The resistance of each brake lightbulb on an automobile is 5.8 ohms. Use the fact that gasoline powered cars have 12 V electrical systems to compute the current that flows in each bulb if they are connected in series.

11/28/23, 8:29 PM Module 7 - Chapter Quiz: PHYS 102 Explorations in Physics - Oct 2023 - Online https://erau.instructure.com/courses/164880/quizzes/575394 5/5 1.034 Quiz Score: 90 out of 100

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