📚 Learning Guide
Dielectric Charge Flow
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When a charged capacitor discharges through a resistor, what occurs regarding the energy stored in the capacitor?

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Choose the Best Answer

A

The energy is released as heat in the resistor, demonstrating energy dissipation.

B

The energy is converted entirely into light, causing a spark.

C

The energy remains stored indefinitely until the capacitor is recharged.

D

The energy flows back into the capacitor, increasing its charge.

Understanding the Answer

Let's break down why this is correct

Answer

When a charged capacitor is connected to a resistor it begins to discharge, and the electric field inside the capacitor collapses. The energy that was stored in that field is transferred to the resistor as electrical current, and the resistor turns that energy into heat. In a simple example, a 10‑volt, 100 µF capacitor holds 0. 5 × 100 µF × (10 V)² = 0. 005 joules; when it discharges through a 1 kΩ resistor, that 0.

Detailed Explanation

A capacitor keeps electric energy stored while it is charged. Other options are incorrect because Sparks happen only when a very short, low‑resistance path lets a large voltage jump across a tiny gap; One might think the capacitor keeps its energy until someone charges it again.

Key Concepts

Capacitor Discharge
Energy Dissipation
Electrical Resistance
Topic

Dielectric Charge Flow

Difficulty

medium level question

Cognitive Level

understand

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