Question

Write the nature of force if (i)q1q2 <0 (ii)q1q2>0

Answer 1

Answer:

Nature of force where :

1. q₁q₂ < 0  is attractive
2. q₁q₂ > 0 is repulsive

Explanation:

We know that,

Like charges repel each other and

Unlike charges attract each other

Hence,

If q₁ is positive and q₂ is positive, they repel and q₁q₂ is positive

q₁q₂ = +q₁ * +q₂ = q₁q₂

If q₁ is negative and q₂ is negative, they repel and q₁q₂ is positive

q₁q₂ = -q₁ * -q₂ = q₁q₂

If q₁ is positive and q₂ is negative, they attract and q₁q₂ is negative

q₁q₂ = +q₁ * -q₂ = -q₁q₂

If q₁ is negative and q₂ is positve, they attract and q₁q₂ is negative

q₁q₂ = -q₁ * +q₂ = -q₁q₂