A-LevelPhysicsElectric fieldsOct/Nov 2019Paper 4 Q610 Marks
(a) State an expression for the electric field strength E at a distance r from a point charge Q in a vacuum. State the name of any other symbol used. (b) Two point charges A and B are situated a distance 10.0 cm apart in a vacuum, as illustrated in Fig. 6.1. [Figure 6.1] A point P lies on the line joining the charges A and B. Point P is a distance x from A. The variation with distance x of the electric field strength E at point P is shown in Fig. 6.2. [Figure 6.2]
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