MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 12
        
two point charges of 10^-8 and -10^-8C are placed 0.1m apart . calculate electric feild intensity at A,B and C .
4 months ago

Answers : (2)

Vikas TU
9476 Points
							
Hiii 
Electric field intensity at A will be E1+E2
and electric field intensity at B will be : E1 – E2
Electric field intensity at A+C will be 
sqrt (E12 + E22 + 2*E1E2 Cos 1200 )
Hope this helps.
4 months ago
Khimraj
3008 Points
							
Given, 
q₁ = 10⁻⁸ C 
q₂ = -10⁻⁸ C 
∵ one charge is positive and other charge is negative 
∴ electric field due to q1 and electric field due to q2 are in same direction. 
∴ Electric field at A = electric field due to q₁ + electric field due to q₂ 
= Kq₁/(0.05)² + kq₂/(0.05)² 
= 9 × 10⁹ × 10⁻⁸/(0.05)² + 9 × 10⁹× 10⁻⁸/(0.05)² 
= 2 × 9 × 10/(1/20)²
= 180 × 400 N/C 
= 72000 N/C 
Electric field at B = electric field due to q₁ - electric field due to q₂ 
= kq₁/(0.05)² - kq₂/(3 × 0.05)² 
= 9 × 10⁹ × 10⁻⁸/(1/20)² - 9 × 10⁹ × 10⁻⁸/9 × (1/20)² 
= 36000 - 4000 
= 32000 N/C
Electric field intensity at C = 
Here ,Θ = 120° [ see attachment for understanding ] 
E₁ = kq₁/(0.1)² = 9 × 10⁹ × 10⁻⁸/(0.1)² = 9 × 10³ = 9000 N/C 
E₂ = 9000 N/C [ because magnitude of charges and separation are same ] 
Now, Electric field intensity at C = 
= 9000 N/C
3 months ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details