3. By using the fact that around any closed loop the sum of the EMFS = the sum of the PDs. Writeequations for the two loops shown in the cct below.40ΔΩI₂4V(loop120 (loop2) 2vI+12Use these equations to show that the current flowing through the 20 resistor is 0.75A

Answered: Image /qna-images/answer/f1900937-49ae-413d-96ed-c7627b400c81.jpg

Answered: 3. By using the fact that around any…

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

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Chapter7: Electricity

Section: Chapter Questions

Problem 27P: . The generator at a large power plant has an output of 1,000,000 kW at 24,000 V. (a) If it were a...

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Consider the circuit below, (a) What is the initial current through resistor R2? when the switch is closed? (b) What is die current through resistor R2 when the capacitor is fully charged, long after die switch is closed? (c) What happens if the switch is opened after it has been closed for some rime? (d) If the switch has been closed for a time period long enough for the capacitor to become fully charged, and then the switch is opened, how long before the current through resistor R1 reaches half of its initial value?
Can all of die currents going into the junction shown below be positive? Explain.
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A young man owns a canister vacuum cleaner marked 535 W [at] 120 V and a Volkswagen Beetle, which he wishes to clean. He parks the car in his apartment parking lot and uses an inexpensive extension cord 15.0 m long to plug in the vacuum cleaner. You may assume the cleaner has constant resistance, (a) If the resistance of each of the two conductors in the extension cord is 0.900 , what is the actual power delivered to the cleaner? (b) If instead the power is to be at least 525 W, what must be the diameter of each of two identical copper conductors in the cord he buys? (c) Repeat part (b) assuming the power is to be at least 532 W.
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Unreasonable Results (a) What current is needed to transmit 1.00 102MW of power at 480 V? (b) What power is dissipated by the transmission lines if they have a 1.00 -resistance? (c) What is unreasonable about this result? (d) Which assumptions are unreasonable, or which premises are inconsistent?
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3. By using the fact that around any closed loop the sum of the EMFS = the sum of the PDs. Write equations for the two loops shown in the cct below. 40 ΔΩ I₂ 4V (loop1 20 (loop2) 2v I+12 Use these equations to show that the current flowing through the 20 resistor is 0.75A