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Question & Answer
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Dielectrics increase the capacitance of a capacitor by allowing more charge to be stored.
Inserting a dielectric causes the electric field inside the capacitor to increase.
The breakdown electric field is the maximum electric field that a dielectric can withstand before becoming conductive.
Dielectrics do not affect the flow of current in a circuit.
The presence of a dielectric reduces the voltage across the capacitor for a given charge.
Understanding the Answer
Let's break down why this is correct
Adding a dielectric lowers the electric field inside a capacitor for a fixed voltage, so it can hold more charge, which raises its capacitance. Other options are incorrect because Students often think that putting a material inside the capacitor pushes charges together, raising the field; A dielectric is an insulator, so it does not let current flow directly.
Key Concepts
Electric Field Effects on Charge
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Deep Dive: Electric Field Effects on Charge
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Definition
Dielectric materials impact the flow of charge in electric fields. When a dielectric is inserted, charge flows onto plates, altering the capacitor's behavior. Understanding this process helps in designing capacitors with large capacitance while considering factors like breakdown electric field.
Topic Definition
Dielectric materials impact the flow of charge in electric fields. When a dielectric is inserted, charge flows onto plates, altering the capacitor's behavior. Understanding this process helps in designing capacitors with large capacitance while considering factors like breakdown electric field.
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