Question

TUTU UU UU UUUWIII WC DANTUM OCUS. 6.14 The voltage at the terminals of the capacitor in PSPICE Fig. 6.10 is known to be MULTISIM V = 5-10 V, ts 0; 140 – le-10001(50 cos 500t + 20 sin 500 t) V, t > 0. Assume C = 0.8 uF. a) Find the current in the capacitor for t < 0. b) Find the current in the capacitor for t > 0. c) Is there an instantaneous change in the voltage across the capacitor at t = 0? d) Is there an instantaneous change in the current in the capacitor at t = 0? e) How much energy (in millijoules) is stored in the capacitor at t = co?

Answer 1

C=0.&4F -lov -ooot lmcdsoot +aosi»svot),t^o 40- le Culcut tn the capaci ta, i- c- to, v-(oV OA cicutn fhe apaut t20. e-looot onoot +o Ain smot) o-&0 -(000 e -ooo Yso ( o t-l00oxro Sinsoot 0--e-ocot S-soo00doot - 20000 sin soot ->sooo sinsoot + l000oCosdot - 6.03> (ossoot +0-036 Sin soot) e-tooot i 3a (d sDot + 36 ^in sdot]ecoot mA The capait doent allau the Audfa chaug in the voltage acrd t there is no instantaneoy thange Awi No at to uo-e (so Co0 +20 Sino) Vo) No

Yes, Thene n stan taneay change in the Cuyeutin the capaci u*o atto T(32 Coo tB6 sinde 3n A itchaugy tem o to 3mA . o to mA e)a t, e-o do Evergy tored in the capacy WC 6.uxo-y 0-6 4K A a) o A ma NO w 0.64MJ