PHY218085 SpSum 16_Exam2A_v4 Key_Mod.docx - Word Design Layout References Mailin
ID: 1583200 • Letter: P
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PHY218085 SpSum 16_Exam2A_v4 Key_Mod.docx - Word Design Layout References Mailings Review View Tell me what you want to do 1 . If a capacitor has a capacitance of 10.2 F and we wish to lower the potential difference across the plates by 60.0 V, how much charge will we have to remove? A. 10.2 uC B. 612 C C. 10.2 C D. 0.17 uC E. 612 uC C2 C C 10 mF. What 2. Consider the assembly of capacitors shown here. Let C is the equivalent capacitance of this circuit? A. 40 mF B. 7.5 mF C. 15 mF D. 20 mF E. 30 mF C2 Ct C3 C4 3. Suppose that three points are set at equal (large) distances r from the center of an electric dipole. Point 2 is on the dipole axis above the positive charge, point 1 is on the axis below the negative charge, and point 3 is on a perpendicular bisector through the line connecting the two charges. Rank the points according to the electric potential of the dipole shown, greatest (most positive) first. B. 3, 1, 2 C. 2, 1,3 E. All have the same value 2. 35Explanation / Answer
1)
The charge that has to be removed can be calculated as:
Q = CdV
= 10.2 uF x 60 V
= 612 uC (option E)
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