Estimate the capacitance of the Earth given that it has a radius of 6 . 4 × 10 6 m . State any assumptions you make.

The radius of the earth is r = 6 . 4 × 10 6 m The capacitance of the earth is given as, Capacitance of the Earth (assuming Earth is a perfect sphere) = 4 π ε 0 r = 4 × π × 8 . 85 × 10 - 12 × 6 . 4 × 10 6 = 0 . 000 71 F ≈ 700 µ F Hence, it is the required answer.

E M B I B E

Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 23 - Capacitance>Question

David Sang and Graham Jones Solutions for Chapter: Capacitance, Exercise 9: Question

Author:David Sang & Graham Jones

David Sang Physics Solutions for Exercise - David Sang and Graham Jones Solutions for Chapter: Capacitance, Exercise 9: Question

Attempt the practice questions on Chapter 23: Capacitance, Exercise 9: Question with hints and solutions to strengthen your understanding. Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access solutions are prepared by Experienced Embibe Experts.