Question

The radii of two metallic spheres $P$ and $Q$ are $r_{1}$ and$r_{2}$ respectively. They are given the same charge. If $r_{1} > r_{2}$. then on connecting them with a thin wire, the charge will flow

• A. From P to Q
• B. From Q to P
• C. Neither the charge will flow from P to Q nor from Q to P
• D. The information is incomplete

Answer 1

Answer: (D)

The information is incomplete

Answer 2

Since charge flows from high potential to lower potential.

If positive charge is given, then V_­1 < V₂ as r₁ > r₂

So positive charge flows from Q → P

If negative charge is given, then V₁ > V₂

So negative charge flows form P → Q.

Since it is not given that whether the charge given is positive or negative, hence the information is incomplete.