II PU PHYSICS - ELECTRIC CHARGES AND FIELDS - session-  (5/7)
Channel: PACE P U COLLEGE
Date: 2020-06-23

*see Problem 1.23 corrected solution at the bottom.

Faculty : RiK
Subject: Physics
Topic: Electric charges and fields (5/7)

Note: It is advised to set high resolution (480p) for best performance and use head set for good audibility


*correction to problem 1.23
Formula

E= 1/2πε₀ λ/r

here 1/2πε₀ = 18x10^9

Then

9x10^4 = 18x10^9 [ λ/ 2x10^-2]

λ = 18x10^2/18x10^9

λ=1x10^-7

λ= 0.1x10^-6m

λ= 0.1μm