First slide

Pontial due to

Question

Two insulated charged spheres of radii 20 cm and 25 cm, respectively, and having an equal charge Q are connected by a copper wire, and then they are separated. Then

Easy

A

Both the spheres will have the same charge Q
B

Charge on the 20 cm sphere will be greater than that on the 25 cm sphere
C

Charge on the 25 cm sphere will be greater than that on the 20 cm sphere
D

Charge on each of the sphere will be 2Q

Solution

After the connection of wire, V₁ = V₂
$∴ \frac{Q_{1}}{25} = \frac{Q_{2}}{20} \Rightarrow \frac{Q_{1}}{Q_{2}} = \frac{25}{20} \Rightarrow Q_{1} > Q_{2}$

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