IB Physics. Electric Potential
/A tutorial sheet of questions on electric potential follows.
- Explain why the electric potential is negative in sign around a negative charge.
- A spherical shell of radius R carries a charge Q. What is the electric potential at the centre of the sphere.
- A sphere of radius R contains charge of uniform density r. The sphere contains a spherical cavity of radius R/4 at a distance R/2 from the centre of the sphere. Find the electric potential at the centre of the cavity.
