Coulombs Law

We are given: -

q_1%20%3D%20%2B2%20%5C%2C%20%5Cmu%5Ctext%7BC%7D%20%3D%202%20%5Ctimes%2010%5E%7B-6%7D%20%5C%2C%20%5Ctext%7BC%7D

q_2%20%3D%20-2%20%5C%2C%20%5Cmu%5Ctext%7BC%7D%20%3D%20-2%20%5Ctimes%2010%5E%7B-6%7D%20%5C%2C%20%5Ctext%7BC%7D

- Distance

r%20%3D%200.1%20%5C%2C%20%5Ctext%7Bm%7D

- Coulombâ€™s constant

k%20%3D%209%20%5Ctimes%2010%5E9%20%5C%2C%20%5Ctext%7BNm%7D%5E2%2F%5Ctext%7BC%7D%5E2

Step 1: Use Coulombâ€™s Law

F%20%3D%20%5Cfrac%7Bk%20%7Cq_1%20q_2%7C%7D%7Br%5E2%7D

F%20%3D%20%5Cfrac%7B9%20%5Ctimes%2010%5E9%20%5Ccdot%20(2%20%5Ctimes%2010%5E%7B-6%7D)%5E2%7D%7B(0.1)%5E2%7D

F%20%3D%20%5Cfrac%7B9%20%5Ctimes%2010%5E9%20%5Ccdot%204%20%5Ctimes%2010%5E%7B-12%7D%7D%7B0.01%7D%20%3D%20%5Cfrac%7B36%20%5Ctimes%2010%5E%7B-3%7D%7D%7B0.01%7D%20%3D%203.6%20%5C%2C%20%5Ctext%7BN%7D

Step 2: Direction of force Since the charges are opposite in sign, the force is attractive. Answer: The electrostatic force between the charges is

3.6%20%5C%2C%20%5Ctext%7BN%7D

. So, the correct answer is option (1).

High-Yield Trend

Chapter Questions
1 MCQs

Official Solution

Coulombs Law

High-Yield Trend

Chapter Questions 1 MCQs

Official Solution

Chapter Questions
1 MCQs