Practice Questions
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When a dielectric material is placed in an electric field, what occurs at the molecular level that contributes to its polarization?
When a field is applied, each molecule’s tiny positive and negative ends try to line up with the field direction. Other options are incorrect because ...
When an external electric field is applied to a dielectric material, which of the following best describes the resulting effect on the material's internal charge distribution?
A dielectric does not conduct electricity, but its atoms have slightly positive and negative parts. Other options are incorrect because Some people th...
What occurs in a dielectric material when the electric field strength exceeds its dielectric strength, leading to a breakdown?
When the field exceeds the material’s limit, electrons are pulled out and a path of ionized gas forms. Other options are incorrect because This answer...
In a dielectric material subjected to an alternating electric field, what effect does a high dielectric constant have on dielectric loss?
A high dielectric constant means the material can polarize more when the field changes. Other options are incorrect because Some think a larger dielec...
When comparing the dielectric response of materials under AC and DC electric fields, which of the following statements best describes the impact of dielectric loss on energy storage in capacitors?
Dielectric loss happens when the material’s dipoles cannot follow the changing electric field. Other options are incorrect because Many think loss is ...
When a charged capacitor discharges through a resistor, what occurs regarding the energy stored in the capacitor?
A capacitor keeps electric energy stored while it is charged. Other options are incorrect because Sparks happen only when a very short, low‑resistance...
Arrange the following steps in the correct order for discharging a capacitor through a resistor: A) The capacitor is charged, B) The circuit is completed by connecting the resistor, C) The stored energy begins to dissipate, D) The capacitor is fully discharged.
The capacitor must first be charged before any discharge can occur. Other options are incorrect because This answer swaps the first two steps; It sugg...
Capacitor : Electric Field :: Leyden Jar : ?
A Leyden jar holds a charge between its inner and outer metal parts, just like a capacitor holds a charge between two plates. Other options are incorr...
What happens to the energy stored in a capacitor when it is discharged through a resistor?
The electric energy in the capacitor turns into heat when it flows through a resistor. Other options are incorrect because Some think the capacitor st...
A student discharges a Leyden jar capacitor by connecting its plates with a wire. After the discharge, they notice no spark. What principle explains the absence of a spark, and how does it relate to dielectric charge flow?
When the jar is shorted, the electric energy stored between the plates moves through the wire as current. Other options are incorrect because It is ea...
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