A laser printer has a rotating drum carrying a charged pattern. Point P is in the air close to the drum, with a gap between P and the drum. There is no toner particle at P.
For point P beside the charged drum, which statement describes the effect of the drum’s charge on the surrounding space?
The field reaches P only when charged toner enters the gap.
The field stops before P because air separates it from the drum.
The field is present at P and could exert a force on charged toner placed there.
The field is produced at P only while the drum is rotating.
80 exam-style questions on Edexcel GCSE Physics 11.2 Uses, dangers and electric fields, covering 11.2.1 Uses of electrostatic charge, 11.2.2 Dangers of sparking, 11.2.3 Electric fields, and 11.2.4 Electric fields and static electricity. Each one has a worked solution and a mark scheme showing where the marks go.