JAC 12th Physics Important Questions For Board Exam: झारखण्ड बोर्ड कक्षा 12th सभी विद्यार्थियों के लिए Physics Chapter 2. Electric Potential and Capacitance पिछले वर्षो में जो भी प्रश्न पूछे गए हैं, उनकी चर्चा हम इसमें करेंगे इनमें हम Subjective Questions तथा Objective Questions को देखेंगे तो इन Important Questions को पढ़ लीजिए.
रांची: झारखंड एकेडमिक काउंसिल ( JAC Board) कक्षा JAC 12th Physics Important Question के पिछले वर्षों के सभी महत्वपूर्ण प्रश्न (important Questions) आपको यहाँ पर बताए जा रहे है, जो बोर्ड परीक्षा के लिए बहुत महत्वपूर्ण है, अगर आप इन सभी प्रश्नों को याद कर लेते हो तो अवश्य ही आप JAC बोर्ड class 12th Physics exam में अच्छे अंक प्राप्त कर सकते हो.
यदि आप ऐसे ही सभी विषयों के Chapterwise प्रश्न उत्तर चाहते हैं तो हमारे वेबसाइट jharkhandlab.com से जुड़े रहे.
विद्यार्थी इसका उत्तर स्वयं करें। ये सारे प्रश्न आपके परीक्षा (JAC 12th Physics Important Question For Board Exams)में बार – बार पूछे जा रहे है। इसमें आपको सभी chapter का अलग-अलग पिछले 16 से 17 वर्षों के महत्वपूर्ण प्रश्न मिलेंगे। यानि 2006-2022 इसमें आपको ये भी बताया जा रहा है कि कौन से प्रश्न किस तरह से एवं कितने marks के पूछे जा रहें है।
यदि वैसे छात्र छात्राएं जो प्रश्नों के उत्तर नहीं कर पाते हैं, वो कुछ दिन प्रतीक्षा करें. आप यहाँ से Questions-answers डाउनलोड कर सकते हैं.
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JAC 12th Physics Previous Years Important Questions-
Q1. Define electric potential at a point. (2006)
Q2. Two capacitors of capacities 6µF and 12µF are joined in series and a potential difference of 12V is applied on the combination. What are the charges on the capacitors? (2006)
Q3. Define equipotential surface. What are its characteristics? (2007, 2018)
Q4. Derive an expression for the capacitance of a parallel plate capacitor with a dielectric medium between the plates. (2008)
Q5. On what factors does the capacitance of a capacitor depends. (2009)
Q6. Derive an expression for the electric potential at any point due to an electric dipole. (2009, 2016)
Q7. Prove that energy stored in a parallel capacitor can be expressed by the relation Q²/2C. (2010)
Q8. What is dielectric? Give two examples of dielectric.(2011)
Q9. What is electric potential?Calculate the electric potential due to a electric dipole at any point. (2011)
Q10. Find the energy stored in a capacitor. Using it find the energy density of a parallel plate capacitor. (2013)
Q11. If the air between two plates of a parallel plate condenser is displayed by a medium of relative permittivity k, then its capacity – (2014)
a. Increases k times
b. Decreases k times
c. Remain constant
d. None of these
Q12. Electric field and electric potential are related is-(2015)
a. E = -dr/dV
b. E = -dV/dr
c. E = dV/dr
d. E = dr/dv
Q13. If the distance between two plates of parallel plate capacitor is doubled, its capacity- (2015)
a. Increases 2 times
b. Decreases 2 times
c. Increases 4 times
d. Decreases 4 times
Q14. Three Capacitors, each of capacitance C are connected in series. Their equivalent Capacitance will be – (2017)
a. C/3
b. 3C
c. 3/C
d. 1/3C
Q15. Derive an expression for the energy stored in a charged capacitor. (2017)
Q16. Derive an expression for the capacitance of a parallel plate capacitor. ( 2019)
Q17. Derive an expression for the electric potential at a point in axial position due to an electric dipole. (2020)
Q18. The capacitance of a parallel plate capacitor does not depend on – (2022these
a.area of the plates
b. metal of the plates
c. medium of the plates
d. distance between the plates
Q19. If a dielectric be introduced between the plates of a parallel plate capacitor then the value of its Capacitance – (2022)
a. decreases
b. Increases
c. Remain same
d. None of these
Q20. The energy stored per unit volume between two plates of a parallel plate capacitor will be – (2022)
a. (½E0) E
b. (½E0²)E
c. (½E0²)E²
d. ( ½E0)E²
Q21. Dimensional formula for electric potential is-
a. [ML²/T²A]
b. [ML²/T³A]
c. [ML/T²A]
d. [ML/T³A]
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