NEET2012PhysicsElectrostaticsActual
Two metallic spheres of radii 1 ~cm and 3 ~cm are given charges of -1 10⁻² C and 5 10⁻² C , respectively. If these are connected by a conducting wire, the final charge on the bigger sphere is
Options
- A2 10⁻² C
- B3 10⁻² C
- C4 10⁻² C
- D1 10⁻² C
Correct answer
B. 3 10⁻² C
Step-by-step solution
Charge flows from high potential to low potential aligned K Q₁ 3 & = K Q₂ 1 Q₁ & =3 Q₂ aligned Also aligned Q₁+Q₂ & =4 10⁻² 4 Q₂ & =4 10⁻² aligned Q₂=10⁻² and Q₁=3 10⁻² C