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Subjective Problems Set 1 (in Hindi)
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2 subjective questions, easy level, basic questions using minimal theory.

Udit Gupta is teaching live on Unacademy Plus

Udit Gupta
A Mechanical Engineer from NIT Allahabad here to help learners with physics. Also a Star ⭐ educator.

U
Unacademy user
thanks for providing such an awesome content. I knew nothing about banking before but. now i am able to understand all important terms.
sir you are brilliant your teaching skills are awesome thank you sir sir please make video on magnetism from now onwards
Udit Gupta
a year ago
started will upload in a week
  1. Problems in capacitors Udit Gupta Ex-VMC Physics Faculty MNNIT Allahabad


  2. Subjective Problem -1 A parallel plate capacitor has plates of area 400cm2 and separation between the plates 2.00mm. What potenticl difference will be developed if a charge of 1.00nC is given to the capacitor? If the plate separation is now increased to 4.00mm, what will be the new potential difference? 2


  3. Approach Level 1-Easy Basic definitions -) Parallel plate capacitor


  4. Solution: On increasing the separation from 2mm to 4mm, the capacitance is decreased by a factor of 2 If the charge remains same, the potential difference will increase by a factor of 2. Thus the new potential difference will be 5.65 x 2 11.3V The capacitance of a parallel plate capacitor is given as: EgA C= C = 8.85 10-12 x too x 10-4 C = 0.177 10-9F 2 10-3 The potential dittererics between the plates is: 5.65V = = C 0.177


  5. Subjective Problem - 2 An isolated sphere has a capacitance of 25pF Calculate its radius. b) How much charge should be placed on it to raise its potential to 104V? 5


  6. Approach Level 1-Easy Basic definitions Spherical Capacitor


  7. Solution (a): The capacitance of an isolated sphere is: 25 10-12- 9 109 R 22.5cm Solution (b): Q CV 25 x 10-12 x 10 0.25uC


  8. Unacademy Q. Educator Feed Tune into the atest from your educatos Mobile Viewers Hi Udit 10 Your teaming goal ii 10 mnutes Open Unacademy app 2. Go to search button 3. Type "Udit" 1. Continue Watching (Hindi) Basics of HTML a y Kitkat cover facts for UPSC CSE Prelims 2018 Learn with friends Home Explone Plus 8


  9. nuoa to ennolt in courses folow best educetons, inberact with the community and teack your progeress Udit Gupta o Desktop viewers: MNNIT habad gradate 2013 bath Es vIC aculty of Physics,Co tounde lements At Logon to www.unacademy.com Hinl Reistan geogaphy udyog for RPSC Search "Udit" (Hind) JEE Advance 2018 Solutions ! Hindi) Curent Elecaricity for IT JEE Hind) Bectrostatico Numercals for 9


  10. Cheers. Any questions or doubts? Comment or leave a message. You can find me at https://unacademy.com/user/udit13 10