Physics

Problem

Two large rectangular plates of width

10\,\text{cm}

and length

20\,\text{cm}

are separated by

2\,\text{mm}

. They are connected to a

50\,\text{V}

supply. The plates are then slid horizontally parallel to their length so that the overlap length reduces to

10\,\text{cm}

. Find the new charge stored on the capacitor while remaining connected to the supply.