Question no:20 and Capacitor problem Points R and T are each a distance d from e

Question

Question no:20 and Capacitor problem

Points R and T are each a distance d from each of two particles with charges of equal magnitudes and opposite signs as shown. If k = 1/4 0, the work required to move a particle with a negative charge q from R to T is: 0 kq/d2 kqQ/d kqQ/ 2d kQq/(2d) The plate areas and plate separations of five parallel plate capacitors are capacitor 1: area A0, separation d0 capacitor 2: area 2A0, separation 2d0 capacitor 3: area 2A0, separation d0/2 capacitor 4: area A0/2, separation 2d0 capacitor 5: area A0, separation d0/2 Rank these according to their capacitances, least to greatest. 1, 2, 3, 4, 5 5, 4, 3, 2, 1 5, 3 and 4 tie, then 1,2 4, 1 and 2 tie, then 5, 3 3, 5, 1 and 2 tie, 1, 4 To charge a 1-F capacitor with 2 C requires a potential difference of: 2 V 0.2 V 5V 0.5 V none of these FIND CT = QTOTAL = UTOTAL COMPLETE THE TABLE

Explanation / Answer

20=D

21=A

22=C

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