Question

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 × 10^-15m is 

Options

• 80 V

• 8 × 10⁶ V

• 9 V

• 7 × 10⁵ V

Answer 1

8 × 10⁶ V

Explanation:

V = `q/(4piε_0r)`

= `9 xx 10^9 xx 50 xx 1.6 xx 10^-19/9 xx 10^-15`

= `8 xx 10^6` V