EduNinja

Learn this topic

Study D.2.14 (HL)—Electric potential conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

[Maximum number: 2]

A metal sphere is charged positively and placed far away from other charged objects. The electric potential at a point on the surface of the sphere is 53.9 kV .

The electric potential at a point a distance 2.8 m from the centre of the sphere is 7.71 kV . Determine the radius of the sphere.

use of V r= constant $0.40 \mathrm{~m}$

Marking guidance:

Allow [1] max if r+2.8 used to get 0.47 m .

Allow [2] marks if they calculate Q at one potential and use it to get the distance at the other potential.

All question bank results loaded

IB Physics HL D 2 14 Hl Electric Potential Topic Practice

Learn this topic

Question 1