Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • What is the force between two small charged spheres having charges of 2 × 10^–7 C and 3 × 10^–7 C placed 30 cm apart in air?

Q 1.1: What is the force between two small charged spheres having charges of 2 \times 10^{-7}C and 3 \times 10^{-7}C placed 30 cm apart in air?

Answers (1)

best_answer

Given,

q_{1} =  2 \times 10^{-7} C

q_{2} =  3 \times 10^{-7}C

r = 30 cm = 0.3 m 

We know,

Force between two charged particles, q_{1}  and q_{2} separated by a distance r.

F = \frac{1}{4\pi \epsilon _{0}} \frac{q_{1}q_{2}}{r^2}

= \frac{1}{4\pi \epsilon _{0}} \frac{2\times10^{-7} \times 3 \times 10^{-7}}{(30\times10^{-2}\ m)^2\ }

= (9\times10^9\ N)\times \frac{6\times10^{-14+4}}{900\ m^2\ } = 6\times10^{-3} N

Since, the charges are of same nature, the force is repulsive.

Posted by

HARSH KANKARIA

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Class 12 Computer Science Exam Analysis 2025: Paper 'moderate', but 'tougher' than last three years
anam-khan

CBSE Class 12 Accountancy Exam Analysis 2025: Paper ‘moderate', includes application-based questions
anam-khan

CBSE mulls allowing non-programmable, basic calculators for class 12 Accountancy exam

Latest Question