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

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Definitions:

Half-Life

The time required for a quantity to reduce to half its initial amount, commonly used in describing the decay of radioactive materials.

Half-Life

The time required for half the quantity of a radioactive substance to undergo decay, also used in broader contexts to describe any type of exponential decay.

Half-Life

The time required for one half of the atoms of a radioactive substance to disintegrate into more stable materials.

Half-Life

The time required for half the quantity of a radioactive substance to undergo decay.