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GATE 2019: Electromagnetic Theory Quiz 4

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Question 1

A dielectric is placed in between two parallel plates of a capacitor as shown in Fig. 6.22. The dielectric constant of the dielectric is Description: Description: E:\Gate\SSC-JE Electrical - Part 1\6_Capacitance-final_files\image059.png If the initial capacitance is C, then the new capacitance will be
Description: Description: E:\Gate\SSC-JE Electrical - Part 1\6_Capacitance-final_files\image060.png

Question 2

During dielectric breakdown of a capacitor ____.

Question 3

A parallel plate capacitor connected to a battery stores twice as much charge with a dielectric as it does with air as a dielectric. Then, what will be the susceptibility of the given dielectric?

Question 4

The region carries a perfect dielectric for which , while the region is characterized by . If in the given medium 1, then what will be the electric field density in medium 2?

Question 5

A parallel plate capacitor without any dielectric has capacitance C0. A dielectric slab is made up to two dielectric slabs of dielectric constants K and 2K and is of same dimensions as that of capacitor plates and both the parts are of equal dimensions arranged serially as shown. If this dielectric slab is introduced (dielectric K enters first) in between the plates at constant speed, then variation of capacitance with time will be best represented by-

Question 6

An uncharged capacitor with a solid dielectric is connected to a similar air capacitor charged to a potential Description: Description: E:\Gate\SSC-JE Electrical - Part 1\6_Capacitance-final_files\image179.png If the common potential after sharing of charges is Description: Description: E:\Gate\SSC-JE Electrical - Part 1\6_Capacitance-final_files\image180.png then dielectric constant of the dielectric is
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Sep 22ESE & GATE EE