A weather balloon carries an instrument containing a positive sensing charge. At a lower altitude, the electric field is directed towards the ground. At a higher altitude, the field is weaker and is directed upwards.
Which describes the force on the sensing charge at the higher altitude compared with the force at the lower altitude?
The force is larger and acts upwards.
The force is smaller and acts upwards.
The force is larger and acts towards the ground.
The force is smaller and acts towards the ground.
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.