Question

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An emf source with ε = 120 V, a resistor with R = 80.0 1, and a capacitor with C= 19 mF are connected in series. As the capacitor charges, what is the magnitude of the charge (in mc) on each plate of the capacitor at the instant the current in the resistor is 0.900 A? Select one: a. 2300 O b. 38 C. 1200 d. 910 e. 3500 Next page

Answer 1

page 1

% ain Emf, E= 120v Resistor, R=doch Capacitor, c = 19 mf R=Qor c=19 mf 120v flaws as In CR circuit, the current weathos tautially circuit is completed time constant, E= RC = 80x19x103 Poän lel52009 Nos current flows in circuit 11, bloq 21 = 10etlo I = Happy E e-18 Hilo @ang R we dauc to find charge, cu capacilor when current in resistor is o good from ean 0.9= 120 et/o52 a 0.6 lt/1:52 doo take log on bath side 1) ce poca lut 0:6=-1|1:52 31-05-+1162 = (t = 0,77528

page2

charging a t is time when current in circuit is o-900 A. when circuit completed, the capacitor start and current in circuit decreases Capacitor charging by termula Q = 20 (1-etike find a at time tonises high of ourde Qo= EC = 120X19X103 = 2.2 80 Caulons ao is max charge an capacitar then Q = 2.20 (4- 76.7762/652) 3 Q = 2.2861-20:51) 2.20 (1-0.60) Q = 2-28 (0:4) Q=0.912 Caulomb charge on bath plate of capai Here Product : Notet