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 $B$.