Question

When two uncharged metal balls, each of radius 0.09 mm, collide, two electrons are transferred between them. The potential difference between them would be-

• A. 16µV
• B. 16 pV
• C. 32µV
• D. 64µV

Answer 1

Answer: (D)

64µV

Answer 2

Potential of sphere = ± (Ze)

\ DV = $\frac { 4 \mathrm { Ke } } { \mathrm { R } }$= 64 µV