Define electric field strength.
Fig. 1.1 shows the electric field lines between two charged spheres, A and B.
Fig. 1.1
Using Fig. 1.1, state and explain which of the spheres, A or B, has
State the formula for the electric field strength at the surface of the sphere and state the meaning of any other symbols used.
The field strength at the surface of sphere A is 2.6 × 103 V cm–1, and the field strength at the surface of sphere B is 1.3 × 103 V cm–1.
The magnitude of the charge stored on the surface of sphere B is 7.5 µC.
Assume both spheres have an equal radius.
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