A piece of cloud has area 25×106m2 and electric potential of 105 volt

Question

A piece of cloud has area

25 \times 10^{6} m^{2}

and electric potential of

10^{5}

volts. If the height of cloud is 0.75 km , then energy of electric field between earth and cloud will be?

Options:

A . 250 J

B . 750 J

C . 1225 J

D . 1475 J

Answer: Option D
:
D
Energy =

\frac{1}{2} ϵ_{0} E^{2} \times (A \times d) = \frac{1}{2} ϵ_{0} (\frac{V^{2}}{d^{2}}) A d

= \frac{1}{2} \times \frac{8.85 \times 10^{- 12} \times (10^{5})^{2} \times 25 \times 10^{6}}{0.75 \times 10^{3}} = 1475 J

Was this answer helpful ?

Next Question

More Questions on This Topic :

Question 1. The capacitance of a parallel plate condenser is C. The plates are square plates of side 1 unit. The plates are replaced....The capacitance now becomes?(with all others parameters remaining the same)

Question 2. A parallel plate condenser of capacity 5 μ F is kept connected to a battery of emf 10 V. If the space between the ....12, then the additional charge taken from the battery is?

Question 3. A conducting sphere of radius R, and carrying a charge q is joined to a conducting sphere of radius 2R, and carrying a c....charge – 2q. The charge flown between them will be?

Question 4. A capacitor 1mF withstands a maximum voltage of 6KV, while another capacitor 2mF withstands a maximum voltage of 4KV. If....in series, the system will withstand a maximum voltage of?

Question 5. The radii of two charged metal spheres are 5 cm and 10 cm both having same charge 75 mC. If they are connected by ....wire, the quantity of charge transferred through the wire is

Question 6. A certain number of identical condensers are first connected in series and then in parallel. If the equivalent capacitie....the ratio 1: 9, what is the number of condensers?

Question 7. If two conducting spheres are separately charged and then brought in contact, then....

Question 8. A fully charged capacitor has a capacitance C. It is discharged through a small coil of resistance wire embedded i....Δ T, the potential difference V across the capacitance was?

Question 9. In a charged capacitor, the energy resides as....

Question 10. The insulated metal spheres of radii R1 and R2 having charges Q1 and Q2 respectively are connected ....

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI

Tabulation - Test Paper 2 Data Interpretation Reasoning & DI

Test Paper 1 Direction Sense Test Reasoning & DI

ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0

GFM Combined 1 Free Revision Test SAIL JO E-0