A Pair of Parallel Plates,forming a Capacitor,are Charged

question 50

Multiple Choice

A pair of parallel plates,forming a capacitor,are charged.The plates are pulled apart to double the original separation,the charges on the plates remaining the same.What is the ratio of the final energy stored to the original energy stored?

• A)4
• B)2
• C)1
• D)1/2

---

Definitions:

Cortex

The outer layer of the brain, involved in numerous high-level functions including thought, memory, perception, and language.

Rods

Cells in the eye's retina known as photoreceptors that enable vision under dim lighting conditions.

Visible Spectrum

The portion of the electromagnetic spectrum that is visible to the human eye, comprising wavelengths from approximately 380 to 750 nanometers.

Electromagnetic Wavelengths

The distance over which the wave's shape repeats, a fundamental characteristic of electromagnetic waves, including light, radio waves, and X-rays.