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go toHi can i know why question 10 the answer is A. How do u do this type of grpahs questions?
A positively charged oil droplet falls in air in a uniform electric field that is vertically upwards. The droplet has a constant terminal speed v0 and the electric field strength is E.Physics Reference - A-Level 9702, Past Exam Paper Solutions ..physics-ref.blogspot.com
A small charge q is placed in the electric field of a large charge Q.
Both charges experience a force F.
What is the electric field strength of the charge Q at the position of the charge q?
Answer is D, why isn't it B? :O HELP