alleryTwo charged spheres each of radius R, charge Q, separated by distance d >> R. Force F between them is:
AkQ²/R²
BkQ²/d
CkQ²/d²
DkQR/d²
Answer & Solution
Correct answer: C. kQ²/d²
For r >> R, sphere acts like a point charge at its center.
F = kQ²/d² — the same Coulomb formula as point charges.
Keep practising Electric Charges and Fields
Browse all Electric Charges and Fields questions for JEE Advanced, or explore more Physics topics.
Related questions
A convex lens forms a real image at $60$ cm on one side of an object placed $20$ cm in froTrue or false: electrostaticsThe work done in bringing a charge q from infinity to a point where the potential is V isA parallel-plate capacitor in vacuum has plate area A and separation d. Its capacitance isOn an equipotential surface, the work done in moving a test charge between any two points Electric field at any point inside a hollow charged conductor isAn electric dipole of moment p is placed in a uniform field E. The work done to rotate it Four equal point charges q sit at the corners of a square of side d. The work needed to as