Week 2 Worksheet 26104 Ohms Law completed

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Feb 20, 2024

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EES103 Worksheet 26104 Ohm’s Law © Lincoln Technical Institute. All Rights Reserved. This document contains Lincoln Tech confidential and proprietary information and may not be copied, further distributed, or otherwise disclosed, in whole or in part, without the expressed written permission of Lincoln Technical Institute. 8/23/2022 Instructions: Use the NCCER Electrical Level 1 book (Module 26104) to complete the worksheet. 1. Calculate the resistance of a light bulb through which a current of 1 A passes when a potential difference of 180 V is applied. 𝑅𝑅 = 𝐸𝐸 𝐼𝐼 2. What is the potential difference serving a toaster with resistance of 47 𝛺𝛺 and a current of 3.5A flow? 3. What is the current through an electric heater with resistance of 70 𝛺𝛺 when the Pd is 208V? 4. A light bulb uses 2.5 A when a voltage of 180V is applied, what is the power dissipated in the light bulb? 5. A 75W light bulb is connected to a 120V supply. What is the current in the light bulb? 6. A 24V battery delivers a ½ ampere of current to an electric motor. What is the power dissipated by the motor? 7. A 188 𝛺𝛺 , a 290 𝛺𝛺 and a 170 𝛺𝛺 resistors are connected in series across a 24v battery. Find the total resistance of the circuit. What is the current through each resistor?
EES103 Worksheet 26104 Ohm’s Law © Lincoln Technical Institute. All Rights Reserved. This document contains Lincoln Tech confidential and proprietary information and may not be copied, further distributed, or otherwise disclosed, in whole or in part, without the expressed written permission of Lincoln Technical Institute. 8/23/2022 8. A 420 𝛺𝛺 and a 145 𝛺𝛺 resistor are connected in series across a 220V potential difference. What is the total resistance of the circuit? What is the current through each resistor? What is the voltage drop across each resistor? 9. A 310 𝛺𝛺 , a 500 𝛺𝛺 , and a 340 𝛺𝛺 resistor are connected in series across a 12V battery. What is the total resistance of the circuit? What is the current through each resistor? What us the voltage drop across each resistor? 10. A 600 𝛺𝛺 , a 900 𝛺𝛺 , and an unknown resistor are connected in series across 240V battery. An ammeter in the circuit reads .088A. What is the total resistance of the circuit? What is the size of the unknown resistor? What is the power dissipated in each resistor? 11. Three 215 𝛺𝛺 resistors are connected in parallel across a 60V battery. Find the total resistance of the circuit. What is the total current? What is the current through each resistor? 12. A 444 𝛺𝛺 , a 470 𝛺𝛺 , and a 360 𝛺𝛺 resistor are connected in parallel and placed across a 120V potential difference. What is the total resistance of the circuit? What is the current? What is the current through each resistor?
EES103 Worksheet 26104 Ohm’s Law © Lincoln Technical Institute. All Rights Reserved. This document contains Lincoln Tech confidential and proprietary information and may not be copied, further distributed, or otherwise disclosed, in whole or in part, without the expressed written permission of Lincoln Technical Institute. 8/23/2022 13. A 560 𝛺𝛺 , a 380 𝛺𝛺 , and a 325 𝛺𝛺 resistor are connected in parallel across a 120V battery. What is the total resistance of the circuit? What is the circuit current? What is the current through each resistor? What is the power dissipated? 14. A 120 𝛺𝛺 , a 150 𝛺𝛺 , and an unknown resistance are connected in parallel. The total current of the combination is 12A. The current across the 150 𝛺𝛺 branch is 4A. What is the total voltage? What is the total resistance? What is the unknown resistance? 15. A 225 𝛺𝛺 resistor, a 650 𝛺𝛺 resistor, and a 742 𝛺𝛺 resistor is connected in parallel. This parallel combination is in series with a 325 𝛺𝛺 resistor and also in series with a 438 𝛺𝛺 resistor. Calculate the total resistance, the circuit current, the current through each resistor, and the voltage drop across each resistor. A 90V battery is used? 16. A 700 𝛺𝛺 resistor is in a parallel with a 300 𝛺𝛺 resistor. This parallel combination is in series with a 544 𝛺𝛺 resistor. A 30V battery is used. What is the equivalent resistance of the entire circuit? What is the total current? 17. A 470 𝛺𝛺 , a 100 𝛺𝛺 , and a 1000 𝛺𝛺 resistor is in series. This series combination is then in parallel with a 600 𝛺𝛺 resistor. The combination of the four resistors is then in series with a 1000.3 𝛺𝛺 resistor. A 24V battery is used. What is the equivalent resistance of the entire circuit? What is the total current? What is the voltage drop across the 600 𝛺𝛺 resistor? What is the current through the 100 𝛺𝛺 resistor?
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