Question

Two metal spheres $A$ and $B$ of radii $a \,\&\, b(a < b)$ respectively are at a large distance apart. Each sphere carries a charge of $100\, \mu C$. The spheres are connected by a conducting wire, then

• A. Charge will flow from A to B
• B. Charge will flow from B to A
• C. No charge flows in the wire
• D. All charges will reside on the connecting wire

Answer 1

Answer: (A)

$V_{A}=\frac{k(100)}{a} $
$V_{B}=\frac{k(100)}{b} $
$a < b $
$V_{a} >V_{B}$
Charge flows from $A$ to $B$.