When a uncharged parallel plate capacitor is connected to a source of constant potential difference,

Engineering

Physics

Parallel Plate Capacitor

RC Circuit

Electric Potential Energy and Electric Potential

Question

When a uncharged parallel plate capacitor is connected to a source of constant potential difference,

only half of the energy drawn from the source is dissipated outside the capacitor

all the charge drawn from the source is stored in the capacitor

all energy drawn from the source is stored in the capacitor

the potential difference across the capacitor grows very rapidly intially and this rate decreases to zero eventually

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When connecting an uncharged capacitor to a constant voltage source, the charging process involves energy dissipation. The energy drawn from the source is $U = Q V$ , but the energy stored in the capacitor is only $U = \frac{1}{2} Q V$ . The other half is dissipated as heat in the connecting wires due to the current flow during charging. Therefore, only half of the energy from the source is stored in the capacitor.

Final Answer: only half of the energy drawn from the source is dissipated outside the capacitor