Skip to content
MathsGenie logo
Open app

Course home

  1. A Level
  3. Physics AQA
  5. Question bank

Electric fields (A-level only)

EasyMedium
123456789101112131415161718192021222324252627282930313233343536373839
Question 18

A spherical metal dome of a Van de Graaff generator has a radius RRR. When charged, the electric potential at a distance of 3R3R3R from the centre of the dome is V0V_0V0​.

What is the magnitude of the electric field strength EEE at the surface of the dome?

V03R\frac{V_0}{3R}3RV0​​

V0R\frac{V_0}{R}RV0​​

3V0R\frac{3V_0}{R}R3V0​​

9V0R\frac{9V_0}{R}R9V0​​

Electric fields (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Electric fields (A-level only)