Worksheet 2 - Ohms Law

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Kent State University *

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35040

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Electrical Engineering

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Dec 6, 2023

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docx

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AERN 35040 – Aircraft Systems I - Worksheet DUE: 18 Feb (Thur) - Beginning of class Lesson Two – Electrical System Ohm’s Law Worksheet V = IR R = V/I I = V/R Show all of your work. Have the correct units. Circle your answer. 1. What is the current in a 110V circuit if the resistance is 2Ω? V= 110 V I= 55 Amps R = 2 Ω 2. What is the current in a 160V circuit if the resistance is 17Ω? V= 160 I= 9.4 Amps R= 17 Ω 3. What is the current in a 110V circuit if the resistance is 12Ω? V= 110 V I= 9.1 Amps R= 12 Ω 4. What is the current in a 220V circuit if the resistance is 5Ω? V= 220 V I= 44 Amps R= 5 Ω 5. Based on questions 2 and 4, what happens to the current in a circuit as the resistance decreases? Increases? As resistance increases current decreases and as resistance decreases current increases. 6. What voltage is required to move 6A through 5Ω? 30 V 7. What voltage is required to move 6A through 10Ω? 60 V 8. What voltage is required to move 4A through 20Ω? 80 V 9. Based on questions 6 and 7, what happens to the voltage required in a circuit as the resistance decreases? Increases? There will be less voltage required in a circuit that has less resistance than a circuit with higher resistance 10. What is the resistance of a circuit with three 1.5V batteries and running a current of 5A? 0.3 Ω
11. An alarm clock draws 0.7A of current when connected to a 120V circuit. Calculate its resistance. V= 120 V I= 0.7 Amps R= 171 Ω 12. A flashlight uses four standard 1.5V batteries. How much resistance is in the circuit if it uses a current of 0.02A? 75 Ω 13. How much voltage would be necessary to generate 20A of current in a circuit that has 5.5Ω of resistance? V= 110 V I= 20 Amps R= 5.5 Ω 14. A light bulb has a resistance of 8Ω and a maximum current of 10A. How much voltage can be applied before the bulb will break? V= 80 V I= 10 Amps R= 8 Ω 15. Create your own problem and solve it. A toaster draws a total of 42382 Amps of current when connected to a 5917V circuit. Calculate its resistance. V= 5917 V I= 42382 Amps R= 0.13 Ω The mathematical relationship between voltage and current is that as voltage increases, current increases, and vice versa. As current increases, voltage increases. The two values are proportional.
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