A-LevelPhysicsElectric fieldsFeb/Mar 2016Paper 1 Q291 Mark
Two large parallel plates X and Y are placed a distance of 5.0 mm apart and connected to the terminals of a 200 V d.c. supply, as shown. [Figure 29.1] A small oil drop at P carries one excess electron. What is the magnitude of the electrostatic force acting on the oil drop due to the electric field between the plates?
A6.4 × 10⁻¹⁵ N
B6.4 × 10⁻¹⁸ N
C1.6 × 10⁻¹⁹ N
D4.0 × 10⁻²⁴ N
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