Drill 7

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School

University of Central Oklahoma *

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Course

2114

Subject

Electrical Engineering

Date

Apr 3, 2024

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pdf

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© Add one more victory to Central’s history! © Name: A 3 b ley S ( Drill #7, Spring 2023. MWF 9-9:50 Page 1 of 3 Jude Jarrod Jingleheimer-Schmidt is planning to discharge a capacitor through a resistor. The capacitor has an initial charge of 1.25x10? C and an initial voltage of 12.0 V across it. After discharging for 0.500 s, the final voltage must be 1.00 V. 1. [5 pts] Sketch the circuit. 2. What is the resistance of the resistor? i ! i : Identify Variables and Constants. Write “?” if the value is initially unknown. Required. Symbol Description Value Units Q. | = Initial charge on capacitor 1.25%102 C U, | = Initial voltage across capacitor 12.0 v C |= Capacitance of capacitor ? F ¢ |= Final time 0.500 s v = Final voltage across capacitor 1.00 Vv T = Time constant ? S p\ = Resistance of resistor ? Q Accepted Equations [3 pts] Show your work here. Keep the units at each step! [5 pts] - & =87 Tou T =QC \filfi)(-s : c*/‘) = o(\\‘Ct/t) AV XA /1}’ 'l ~ fié*fi |- Y= e R g759/ LO4 ) 3F \n (\’ /vr\‘ s G500 L= t/(r\(\" /‘U“o\ > 0. M LX19%1) - 95.75% ] Symbol Value Units Final answer. [2 pts] & ~ % | < 27\ ) (73 S

© Add one more victory to Central’s history! ® Name: Drill #7, Spring 2023. MWF 9-9:50 Page 2 of 3 Meg Martha Jingleheimer-Schmidt has a 6.00x10 m-long solenoid. The wire wraps around the solenoid 9000 times. She wants to produce a magnetic field of 2.00x10 T inside the solenoid. 3. [5 pts] Sketch the solenoid. / \ AN AATATATAN 4. How much current does Meg need to pass through AR A\ the solenoid? - \ANANAN N Lo o Identify Variables and Constants. Write “?” if the value is initially unknown. Required. Symbol Description Units '{7 ‘ = Length of solenoid m /\l = Turns of wire around solenoid [none] P = Magnetic field in solenoid T T = Current through wire A Accepted Equations [3 pts] Show your work here. Keep the units at each step! [5 pts] Q= Sl R = AL _[2 50):1[) ZT)((, 00x 107" %éoooanxln‘7 S) = 0:10L\03MS A4 = (0.0l A Symbol Value Units Final answer. [2 pts] T = 0. 10

© Add one more victory to Central's history! © Name: Drill #7, Spring 2023. MWF 9-9:50 Page 3 of 3 Meg Martha Jingleheimer-Schmidt has a 6.00x10> m-long solenoid that has a diameter of 3.00x10? m. The wire wraps around the solenoid 9000 times. 5. [S pts] Sketch the solenoid. l /1) AN AN NANAAN NN Y 6. What is the self-inductance of the solenoid? { et e \ TS P e S / - o~ T — Identify Variables and Constants. Write “?” if the value is initially unknown. Required. Symbol Description Value Units Z = Length of solenoid = 6.00x107? m A = Diameter of solenoid = 3.00x102 m A = Area of cross-section of solenoid = ? m? /\) = Turns of wire around solenoid = 9000 [none] L = Selféfi%%%aem#Wf solenoid = ? H Accepted Equations [3 pts] Show your work here. Keep the units at each step! [5 pts] H Azar = g(0,01508 = 2.0 ™ | = Mo = (M9x1077 M) aoo0) 2 (7 07x10™ P 0ox 10, = LAWSHS H - 1.1a9492 H . Symbol Value Units Final answer. [2 pts] L - ] TN . N

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