Q3. What is the force between two small charged spheres having charges of 4 x 10-7C and 6 × 10-7C pl

Q: What is the correct answer for CUET UG Physics Q3?

The correct answer is c. According to Coulomb's Law, the force (F) between two point charges (q₁ and q₂) separated by a distance (r) in vacuum or air is given by F = k * (q₁q₂ / r²), where k = 1/(4πε₀) = 9 × 10⁹ N m²C⁻². Given: q₁ = 4 × 10⁻⁷ C, q₂ = 6 × 10⁻⁷ C, r = 60 cm = 0.6 m.F = (9 × 10⁹ N m²C⁻²) * ((4 × 10⁻⁷ C) * (6 × 10⁻⁷ C)) / (0.6 m)²F = (9 × 10⁹ * 24 × 10⁻¹⁴) / 0.36 NF = (216 × 10⁻⁵) / 0.36 NF = 600 × 10⁻⁵ N = 6

Q: Q3. What is the force between two small charged spheres having charges of 4 x 10-7C and 6 × 10-7C placed 60 cm apart in air? (a) 3 x 10-3N (b) 4 x 10-3N (c) 6 x 10-3N (d) 9 x 10-3N

The correct answer is c. According to Coulomb's Law, the force (F) between two point charges (q₁ and q₂) separated by a distance (r) in vacuum or air is given by F = k * (q₁q₂ / r²), where k = 1/(4πε₀) = 9 × 10⁹ N m²C⁻². Given: q₁ = 4 × 10⁻⁷ C, q₂ = 6 × 10⁻⁷ C, r = 60 cm = 0.6 m.F = (9 × 10⁹ N m²C⁻²) * ((4 × 10⁻⁷ C) * (6 × 10⁻⁷ C)) / (0.6 m)²F = (9 × 10⁹ * 24 × 10⁻¹⁴) / 0.36 NF = (216 × 10⁻⁵) / 0.36 NF = 600 × 10⁻⁵ N = 6

Q: What are the options for this CUET UG Physics question?

A. 3 x 10-3N · B. 4 x 10-3N · C. 6 x 10-3N · D. 9 x 10-3N

Question

Q3. What is the force between two small charged spheres having charges of 4 x 10-7C and 6 × 10-7C placed 60 cm apart in air?
(a) 3 x 10-3N
(b) 4 x 10-3N
(c) 6 x 10-3N
(d) 9 x 10-3N

FirstInTest · Accepted Answer

According to Coulomb's Law, the force (F) between two point charges (q₁ and q₂) separated by a distance (r) in vacuum or air is given by F = k * (q₁q₂ / r²), where k = 1/(4πε₀) = 9 × 10⁹ N m²C⁻². Given: q₁ = 4 × 10⁻⁷ C, q₂ = 6 × 10⁻⁷ C, r = 60 cm = 0.6 m.F = (9 × 10⁹ N m²C⁻²) * ((4 × 10⁻⁷ C) * (6 × 10⁻⁷ C)) / (0.6 m)²F = (9 × 10⁹ * 24 × 10⁻¹⁴) / 0.36 NF = (216 × 10⁻⁵) / 0.36 NF = 600 × 10⁻⁵ N = 6 × 10⁻³ N.Since both charges are positive, the force is repulsive.

Answer

3 x 10-3N

Answer

4 x 10-3N

Answer

6 x 10-3N

Answer

9 x 10-3N

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