1. Electric Field vector E has SI unit (a) C/N (b) N/C (c) N (d) none of them 2.
ID: 1574624 • Letter: 1
Question
1. Electric Field vector E has SI unit (a) C/N (b) N/C (c) N (d) none of them 2. If you bring a positively charged rod near to a charge neutral empty coke can : The can will accumulate negative charge in the proximity of the rod due to induction. (If the force due to induction is large enough you will able to roll the empty coke can .Try that at home : its fun : use PVC pipe and wool to create static electricity ) (can you explain this ?) (a) True (b) False 3. Find out what is the electrostatic force Fe of repulsion between two protons, and force due to gravity F, between two protons: what is the ratio of F./F, (use mass of proton as 1.6 × 10-27 Kg , charge 1.6 x 10-19 C , G-6.67408 x 10-11m"Kg-1 s-2 , ke 8.987 × 109Nm?/C2) (even though electric force is many orders stronger than gravity: star formation /motion of of stars and planets are governed by gravity why? most of the astronomical objects are charge neutral or very small charge when compared with amount mass they have) (a) 1.34 × 1030 (b) 1.34 × 1036 (c) 1.34 1020 (d) none of them L- nantar af th ring (which hasExplanation / Answer
1.
SI unit of electric field is N/C
Correct option is B.
3.
Fe = kq1q2/r^2
Fg = Gm1m2/r^2
Fe/Fg = kq1q2/(Gm1m2)
Using known values:
Fe/Fg = (9*10^9*1.6*10^-19*1.6*10^-19)/(6.67*10^-11*1.6*10^-27*1.6*10^-27)
Fe/Fg = 1.34*10^36
Correct option is B.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.