Given:
Potential difference, V = 12.0 V
Capacitance, C = 3.50 pF = 3.50 x 10^-12 F
The initial charge, q_initial, can be calculated using the formula:
q_initial = C * V
q_initial = 3.50 x 10^-12 F * 12.0 V
q_initial = 4.2 x 10^-11 C
Therefore, the initial charge
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