Byron S. answered • 10/13/14
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Capacitors store energy based on the formula Q = CV, where Q is the charge, C is the capacitance, and V is the voltage. The prefix μ (micro) on the units means 10-6. Capacitance is a constant for a given capacitor.
a) You're given Q = 27.0 μC and C = 3.00 μF
b) You're given C = 3.00 μF (same capacitor) and Q = 36.0 μC
In each case, you can plug the values in and solve for V. If you prefer, you can rearrange the formula to be V = Q/C
Byron S.
Both Q and C you need to include the 10-6, since both of their units have μ (μC and μF). Then you'll get 9.00 V. The same will be true for part (b) as well, since again both values have μ units.
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10/14/14
Dalia S.
10/14/14