term term term Class: Date Name: PHYS-2523 Exam # 2 Instructor: Dr. ORION CIFTIA
ID: 1584845 • Letter: T
Question
term term term Class: Date Name: PHYS-2523 Exam # 2 Instructor: Dr. ORION CIFTIA Fill in the blanks with correct answers. Only correct answers count Note: Assignments may be open-answer problems OR mulriple-choice questions OR a combination of multiple-choice questions and open-answer problems. Please, selecr she correct answer (in the case of multiple-choice questions) ORshe blanks with correct answer (in the case of open-answer problems. Only the comect answers Keep 2 digits after the decimal point when rounding mumericl was 1. As the potential difference applied between the plates ofa parallel plz aqumr m,- from 60 V to 84 V, the charge on its plates increases by 48 C (a) Calculan: theapuaneof the capacitor (b). What isthe original charge onthepldc 2.Asshown in the figure, four charges q-q, q-2q,.3% and e-Zp ie athtamms Of a rectangle with length 60 cm and width 40 cm with q-45 CCsim/samar 14m0-899 ×109 N . m2C2). (a) The ttal potential energy ind charges is (b) A fifth charge Q-3.6 Cisalidade-ofthe mange as shown in the figure. The potential energy of interaction bet-the fithaar and the sam of four charges is att Simoff ur 92 93 94 3. When the voltage across a resistor is decreased form 12 Vto 10 Vthe cu though the resistr decreases by 0.40 mA (a) The resistance ofthe reiar i.- .the "ein. power through the resistor is . 4. A 10 m length of a 2.0 mm diameter wire of an unknown material has a mesiunce of420 (a) The resistivity of the material is diameter wire of the same material is (b) The resistamce ek 20 m emgth of a 1.6 mm Abattery with emfof12 Vis connected to a 20 resistor dissipatngsw.(.) Theermmal voltage ofthe battery is (b) The internal resistance of the banExplanation / Answer
1) Q = CV
Q = CV
48C = C(84-60)
C = (48/24)F = 2F
Q = CV
Q = 2× 60 C = 120 C
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