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# Parallel Plate Capacitors with Conducting Slab Video Lecture - Physics Class 12 - NEET

## Physics Class 12

154 videos|444 docs|185 tests

## FAQs on Parallel Plate Capacitors with Conducting Slab Video Lecture - Physics Class 12 - NEET

 1. What is a parallel plate capacitor with a conducting slab?
Ans. A parallel plate capacitor with a conducting slab is a type of capacitor where a conducting slab is placed between the plates of the capacitor. This conducting slab creates a connection between the two plates, allowing for the flow of charge and altering the capacitance of the capacitor.
 2. How does the presence of a conducting slab affect the capacitance of a parallel plate capacitor?
Ans. The presence of a conducting slab in a parallel plate capacitor increases its capacitance. This is because the conducting slab provides an additional path for the charges to flow, effectively increasing the area between the plates. As capacitance is directly proportional to the area between the plates, the introduction of the conducting slab increases the capacitance of the capacitor.
 3. What happens to the electric field between the plates when a conducting slab is inserted in a parallel plate capacitor?
Ans. When a conducting slab is inserted in a parallel plate capacitor, the electric field between the plates becomes non-uniform. The field lines are no longer parallel and equidistant, but they curve towards the conducting slab. This is because the conducting slab acts as an equipotential surface, attracting the electric field lines towards it.
 4. Can a conducting slab completely cancel out the electric field between the plates of a parallel plate capacitor?
Ans. No, a conducting slab cannot completely cancel out the electric field between the plates of a parallel plate capacitor. While the presence of the conducting slab alters the electric field and causes it to curve towards the slab, it does not eliminate the electric field entirely. There will still be some electric field present between the plates, although it may be significantly reduced compared to the case without the conducting slab.
 5. How does the introduction of a conducting slab affect the energy stored in a parallel plate capacitor?
Ans. The introduction of a conducting slab in a parallel plate capacitor increases the energy stored in the capacitor. This is because the capacitance of the capacitor increases due to the conducting slab, and the energy stored in a capacitor is directly proportional to its capacitance. Therefore, with a higher capacitance, more energy can be stored in the capacitor.

## Physics Class 12

154 videos|444 docs|185 tests

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