Question Detail

PHY 102 Coulomb's law and Electric Fields Objective Question
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Question

What is the formula for the energy (PEE) stored in a capacitor with capacitance C and potential difference V?
Options
A PE<sub>E</sub> = <i>CV</i>
B PE<sub>E</sub> = ½<i>CV</i>
C PE<sub>E</sub> = ½<i>CV</i>²
Correct Answer
D PE<sub>E</sub> = 2<i>CV</i>²
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 15, under 'Energy Stored in a Capacitor', provides the formula: 'PEE = ½qV = ½CV² = ½q²/C'. The form ½CV² is commonly used when capacitance and voltage are known.

Hint

The energy stored in a capacitor is proportional to the square of the voltage or charge.

Question Info

Course: PHY 102
Topic: Coulomb's law and Electric Fields
Type: Objective
Difficulty: Not specified
Question 869 of 1819
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