Choose the socrect statement regarding a paraliel plate capacitor 10.AO The capa
ID: 1730944 • Letter: C
Question
Choose the socrect statement regarding a paraliel plate capacitor 10.AO The capacitance depends on the material between the plates BOThe CO The capacitance does not depend on the material between the plates DO The capacitance is inversely proportional to the area A. charge of a disconnected charged capacitor decreases when the plates are brought closer together The voltage of a disconnected charged capacitor remains the same when the plates are brought closer together. What is the MP, nt coupacliane (in units of F) brtwen polnts A and B in the following cireult where,C, 10 11. AO 7.34 BO8.30 Oa38 DO106 EO 12.0 Choose the correct statement regarding the resistance of a wire 12.AO while maintaining a constant voltage V, the current 1 increases when the resistivity ? of a wire decreases. BO While maintaining a constant voltage V, the current I decreases when the resistivity p of a wire decreases CO Theresistance is inversely proportional to the length of the wire? - DO While maintaining a constant voltage V, the current I increases wben the croes-sectional area A of a wire The resistance is proportional to the cross-sectional area A of the wire. The circuit shown on the right has a 30 V battery connected to two resistors in series with R1-60 ? and R2-240 ? Select the correct answers of the total equivalent resistance R of the cireult and the magnitudes of the potentials V, across resistors R, R,, respectively 13.AO 150 .3 V BO 600 ?, 6 V C?300 ?, 30 V. DO 300 ?, 12 V Choose the sorrect statement regarding resistors in a circuit. 14 AO If you connect two diferent resistors in series in a circuit, then the voltage across each of them is the same you connect two diferent resistors in paralel in a circuit, then the voltage across each of them isdiferent resistors in parallel in a cireait, then the voltage across each of them is the same. BO If CÖ I you connect two different I resistors in series have half the resistance of each individual one EO Three identical resistors in series have one third the resistance of each individual oneExplanation / Answer
10. A)
The capacitance depends on the material between the plates.
11.
parallel combination of C2 and C3 is given as
C23 = (C2 + C3)
C23 = (50 + 100)
C23 = 150 uF
C1 and C23 are in series and their combination is given as
C123 = C1 C23/(C1 + C23)
C123 = (10) (150)/(10 + 150)
C123 = 9.38 uF
hence Correct choice is C
12.
A) according to ohm's law , V = i R
as resistivity decrease, the resistance R decrease, hence the current "i" increase to keep the Voltage "V" constant.