What resistance produces a 1.5 mA current if attached to 9.0v? 6 Ohm 600 Ohm 1.0

Question

What resistance produces a 1.5 mA current if attached to 9.0v? 6 Ohm 600 Ohm 1.0 k Ohm 6.0 k Ohm 12 M Ohm The following figure is for Test Questions 8-10. The equivalent capacitance of the above set of capacitors as measured between the end-points is about 22 F 12 F 1.4 F 0.13 F 21 mF The energy stored in the circuit if attached to a 9V battery is 28 mJ 44 mJ 9.0J 22 J 56J With the 9-V battery attached to the two ends of the full circuit, the charge on the 6F capacitor is 4.2 C 8.4 C 12.5 C 18. C 102 C

Explanation / Answer

Q.7 V = IR

9 = (1.5 x 10^-3 ) (R)]

R = 6 k ohms

Q.8 C1 and C2=9 F , C3 and C4 = 9 F

Equivalent capacitance= 1/ Ct = 1/9 + 1/9 + 1/2 = 2/9 +0.5

CT= 1.4 F apprx

Q.9 E = 0.5 (1.4) (9^2) = 56 J

Q 10 let's find the charge in series,

QT= 9 ( 1.4) = 12.6 C

Voltage across C3 and C4= 12.9 / 9 = 1.4 V

Q = 6 (1,4) = 8.4 C

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