Final answer:
The charge stored on a 7 uF capacitor when fully charged is 35 uC, and the energy stored is 0.175 mJ.
Explanation:
(a) Charge stored: To find the charge, we use the formula Q = CV. Given C = 7 uF and V = 5 V, Q = (7 x 10^-6 F) x 5 V = 35 x 10^-6 C = 35 uC.
(b) Energy stored: The energy stored in a capacitor is given by E = 0.5 CV^2. Substituting C = 7 uF and V = 5 V gives E = 0.5 x 7 x 10^-6 F x (5 V)^2 = 0.175 x 10^-3 J = 0.175 mJ.
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